The conclusion endorsed in the argument is that.... To support this conclusion, the author points out that.... In addition, the author reasons that....
The argument is fraught with vague, oversimplified and unwarranted claims.

In an attempt to … , the article claims that … . To justify the claim, the author provides evidence that … . In addition, he points out that … . he cites the result of a recent study that …

In sum, this argument is not persuasive as it stands. To solidify the argument, the author should provide more concrete evidence to demonstrate that … . In addition, the author would have to rule out the abovementioned possibilities that would undermine the claim.
（Only with more convincing evidence could this argument become more than just an emotional appeal.）

The argument rests on an unconvincing assumption that A leads to B. However, no evidence is stated in the argument to support this assumption/ substantiate the clai presumm. It is entirely possible that…Or perhaps… Lacking more complete information about…, it isptuous to conclude /claim that…

Firstly, the author takes for granted that A is the cause of/responsible for B just because the former occurs before the latter. (the former coincides with the latter/ A and B have a correlation)
However, many other factors could bring about the same effect, such as … . Without further efforts to rule out other possible explanations, the author’s claim would be in question.
/ It would be groundless to attribute B to A.
The author unfairly assumes that B was determined solely by A. While A is a seemingly important element in determining B, it is hardly the only or even necessarily required element.
The author’s solution rests on the assumption that A is sufficient to give birth to the desired goals. However, This assumption omits that B is due to a combination of factors, some of which will remain unchanged in the future, such as C and D, only A might have no impact on B.

Moreover, it is highly doubtful that strategies/ facts drawn from A are applicable to B. However, differences between these two clearly outweigh the similarities, therefore making the analogy much less valid. For instance, A...,however, B....(C and D all affect A but virtually absent in B) Accordingly, we can see that A and B are so dissimilar that B is unlikely to experience the same consequence if it adopts A's strategies.

Last but not least, The author’s conclusion depends on the questionable assumption that the conditions listed by the author have remained unchanged since it is entirely possible that …Without considering other potential factors that contribute to … , the author cannot justify his claim.

The statistics from only a few recent years are not necessarily a good indicator of future trends),
However, many other factors could affect , such as … .

The author uses … as an evidence to support the conclusion, but this argument is based on an unproven assumption that … is representative/typical of … in general. Since there are all kinds of differences between … and … , it is entirely possible that … . In fact, in face of such limited evidence, the conclusion that B is completely unwarranted.

The author unfairly assumes that A and B are mutually exclusive alternatives. However, the author provides no reason for imposing an either/or choice. Adjusting both A and B may yield a better result. Moreover, the most effective solution might include a complex of other factors—such as C and D.. .

The poll cited by the author is too vague to be informative.
Lacking information about the number of people surveyed and the number of respondents, it is impossible to access the validity of the results. For example, if 200 persons were surveyed but only 2 responded, the conclusion would be highly suspect. Because the argument offers no evidence that would rule out this kind of interpretations,) Until these questions are answered, the results of the survey are worthless as evidence for the conclusion.