Hello. You did not enter the text to which this question refers, which makes it impossible for it to be answered accurately. In the meantime I will try to help you in the best possible way.
It is only possible to know the implicit morality of a story after reading it. However, we know that the moral of a story is a teaching that the story wants to pass on to the reader. Implicit morality, on the other hand, is also a teaching, but it is transmitted to the reader in a subjective and indirect way, but noticeable.
The answer is (c) note the main ideas. If you already note the main idea it will help you better.
She felt sad because she had been looking forward to it and now the days were longer without him.
A simile uses like or as to compare something
Https://www.cliffsnotes.com/literature/c/the-call-of-the-wild/summary-and-analysis/chapter-6
