Choose the word most similar in meaning to - sodden saturated
incomplete
worthless
rudimentary
2. When economic circumstances change, businesses need to .
intrude
adapt
resound
correlate
3. The extreme of his stock portfolio translated into a display of emotion: on lucrative days he felt ecstatic; on losing days he acted despondent.
aggressiveness...consistent
nature...passionate
position...crazy
volatility...mercurial
variation...pacific

1. saturated

2. adapt

3. volatility...mercurial

Explanation:

1. Sodden is a term used to denote that something is completely soaked, oversaturated with water (for example: carpet, clothes, backyard after massive rains, socks etc.) From that, we could infere that "saturated" has the closest meaning to "sodden".

2. From the context of the sentence, we can conclude that businesses need to properly answer to the change of economic circumstances. That basically means that they need to adjust, to adapt to the new situation.

3. Again, we use the context of the sentence to determine the right answer. Basically, the sentence is about a man whose mood changes reflected on the changes of his stock portfolio. So, we need to find the pair of words that denotes changes and inconsistencies, and the only adequate pair is "volatility...mercurial".