Answer:
A. Nikolai's dual character
Explanation:
Forking rivers or paths are commonly used to express a character's opposing features in literature. In this case, it represents Nikolai's two sides - stern and caring. The river merges into one at the end - implying that his two sides can coexist.
21. Cerebral
22. Prowess
23. Petulant
24. Scrutinized
25. Blathering
C.) "Municipal Solid Waste more commonly known as trash or garbage-consists of everyday items we use and then throw away
The first one is B
I'd say the second one is A
The last one is C