Answer:
The author's claim is that the ban on disposable plastic will create a positive impact on the environment and reduce environmental problems.
Explanation:
An author's claim is the subject on which the author constructs the arguments he wishes to present in a text. In this case, from the text presented above, we can see that the author argued about how the ban on disposable plastics would be important to promote improvements in the environment, as it would reduce the amount of waste that causes pollution and increase global climate changes, in addition to forcing companies to use more sustainable products and favorable to the preservation of the environment.
In this case, we can affirm that the author's claim is that the ban on disposable plastic would cause environmental improvements of global impact.