Answer:
Most compounds in English are endocentric, that is, one of the elements (typically the right-hand element) is the head of the construction. Headedness is shown most clearly by hyponymy: the compound as a whole is a hyponym of its head. For example, traffic-light is a hyponym of light, but not a hyponym of traffic.
Explanation:
Therefore bittersweet would be your endocentric compound. Because something can't be bitter while being sweet.
Pollution could be a focus you could write about.
Answer:
mom would not let them go without her
Explanation:
For the first one:
B.) Historical documents, eyewitness accounts, etc. that provide direct or firsthand evidence about an event, object, person, or work of art.
For the second one:
B.) Her mother stared at her (because "stared" sounds more threatening than "looked").
Hope this helps!