The gerund in this sentence is "learning". A gerund is a verb form which is acting as a noun, in this case after the preposition "in".
The pronoun <em>what </em>is used as an interrogative pronoun. These pronouns are used to ask questions usually.
The correct answer for this question is this one: "C.negative" <span>The word "peculiar" has the kind of connotative meaning in this excerpt that is negative. If you read the line above, the tone is somewhat not positive for a person. It shows that a person is far from the normal person whom he used to be.
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