The answer is a. hope this helps
D. Working to elect their candidate of choice in the general election
Drain.
according to the dictionary it is a conduit through which something is drained.
That's a simple part of evolution. Humans are built to adapt.
If we go in the frozen tundra, we make coats and other cold-blocking clothes. We find nearby food, like fish. Over time, our differences become more distinct from the rest, and we become less vulnerable to the cold.
Hope this helps! :)
