Either investigates or elaborates. I think it's elaborates
The answer is A because you can use context clues
Fear can cause us to think with a negative mindset. Which can cause our future actions to be affected.
I think it would be 18 because it moved a total of 18=12+6
The sentence that has the correct subject- verb agreement is the following one: Neither the Western Hemisphere nor the Eastern Hemisphere are immune to flooding.
The verb "to be" can't be singular because the writer mentions the two hemispheres (the Western Hemisphere and the Eastern one). That is why the first option is the correct one.
