B) to assure himself of its truth
The options given have you take a closer look at the words it's and himself. Option C changes "himself" to "hisself". "Hisself" is never correct. This means we have to decide if the correct answer is "its" or "it's". "Its", without an apostrophe, is the possessive form showing ownership. "It's", with an apostrophe, is a contraction meaning "it is". Let's plug them into the sentence "of it is truth" does not make any sense. Can "it" own truth? Yes, so "its" is the correct answer.
Answer:
The best answer is C) I don't eat figs, they look like swollen raisins.
The definition of a glossary i found is: an alphabetical list of terms or words found in or relating to a specific subject, text, or dialect, with explanations. Based on this definition i would think the most likely answer would be B, a list of topics in a book.
Implying is not a reading strategy, it is an unsafe estimate.