Answer and Explanation:
Sylvia Stults explored climate change through poetry and literature. She was able to write a very influential poem, where she was able to point out in an incisive way the negative impacts of environmental pollution, where climate changes were associated. Sylvia Stults, in her poem, shows how nature has been negatively modified over the years, causing degradation, dishonest and excessive exploitation and contamination of what is essential for our life, nature.
Greta Thunberg, on the other hand, approaches environmental changes in a more political way, drawing the attention of directives of great leaders and political organizations so that they can fix the environmental problems they have created, thus guaranteeing a future for children who are not responsible for pollution, degradation and climatic changes that are being submitted.
<span>Crevecoeur contradicts his own observation about America's diversity and equality by giving an unflattering portrayal of German-American settlers (option A) and by giving descriptions of abject poverty and the wide gap between rich and poor (option D). But he tends to predict that society might triumph over barbarism and settlers would embrace civilization "making room for more industrious people".</span>
With the exception of option A, all sentences are written in imperatives (verb structure used for instructions and/or oders) Therefore, in these examples, the <em>call to action</em> is explicit, not implicit. Your best answer is option A because, apart from the fact that it's the only viable one, here you have a persuasive example by consensus. Simply put, instead of telling you directly to do something, it's telling you that everyone is doing it, which is likely to make you want to do it if you want to be like them.