The answer is: Respect and protect nature.
The theme respect and protect nature is usually used by the writers if they focused on educating the readers regarding the importance of maintaining the proper condition of our environment. Putting giant birds as characters that pick up trash to protect the environment is made to appeal to the readers' emotion so they do not repeat the same behavior.
The correct answer is D, Amount of sunshine.
Indeed, fertilizer may or may not increase yields depending on many complex factors such as humidity, dryness, chemical balance, method of dispersion etc. However, it is an established biological principle that plants fare better with sunlight and in the absence of sunlight they yield less produce, whether they are fertilized or not.
Answer: a) is an example of stereotype threat
Explanation:
A stereotype threat is <em>when people might conform to stereotypes about their social groups</em> (in this case, the social group of "older people").
Conforming to this stereotype can be risky, because it might cause certain social groups to <em>"underperform"</em>, to perform less than their actual potential. It's good that Mrs. Nguyen has formed her own opinion about getting older and <em>she hasn't submitted to the general perception of about "getting older". </em>
<em />
B. Moving Through The Darkness
The other titles sound like informational books that teach you how to do something. This title sounds like the title of a book that tells you a story instead of providing you with information.