We're drawing inference, so it's very important to understand exactly what we're told and stick to it.
IQ or intelligence quotient that deals with understanding information and EQ or emotional quotient that deals with understanding emotions are both key in assuring a person's happiness and ability to succeed => IQ : understanding information, EQ : Understanding emotions, both are key in assuring a person's happiness and ability to success
Although people with a high IQ are exceptionally brilliant at understanding information, when it comes to social interaction they usually have to work hard to understand others and to make themselves understood => Someone who has high IQ generally struggles with understanding others and making themselves understood (Hmm, do they high IQ people generally have low EQ? Well it could be true, but it also could not be true, maybe these high IQ people simply struggle with understanding others and making themselves understood, which maybe a subset of understanding emotions)
Thus, a person with a high EQ is more likely to be happy and successful than a person with a high IQ => Here's the argument/conclusion, someone with high EQ is more likely to be happy and successful against someone with a high IQ (we don't know the IQ content of the former and the EQ content of the latter so this is simply based on the fact that people with high IQ struggle in understanding themsleves and others => they're less likely to be happy and successful than those with high EQ)
Alright, let's jump to the answer choices.
What can be inferred from above?
A. People with a high IQ are not aware of the importance of social interactions in determining their happiness and success.
The passage doesn't state anything about high IQ people being aware of the importance of social interactions, not it can be implied from the given info => Eliminate
B. People with a high IQ generally have a very low EQ.
This can be true, my problem with this is, it also quantifies how low EQ can be and we're anyway not sure if that's true. Lack of understanding others can be attributed to a low EQ, but we're not sure. Also very low, hmm, okay let me keep it, but I see some red flags with this one.
C. IQ and EQ are the only two important factors in determining a person’s happiness and ability to succeed.
There could be other factors, we're only talking about IQ and EQ for now, so eliminate this.
D. A person with a low EQ but a high IQ is less likely to be successful than a person with a low IQ and low EQ.
We only know a high EQ is more likely to be successful than high IQ, if anything, this seems wrong because both are needed to be successful and happy and a high IQ > low IQ (EQ is the same, low so it's effect can be negated) => Completely wrong, eliminate
E. A significant part of understanding people in social interaction does not deal with understanding information.
Oh yeah, this is true. The passage does mention that people with high IQ (they can understand information) struggle with understanding people in social interaction, so we're sure their high IQ doesn't help with this aspect at all. Keep E
E is a much better choice than B, eliminate B, our answer is E