Verse 43: Choose the sentence that is closest in the meaning to the root one. That book / very thick / belong / younger sister.
Knowledge: Relative pronouns
whose: substitute for possessive manner, possessive adjective
that : substitute for person/thing (not used in indefinite relative clauses)
which : substitute for thing
We see that the relative pronoun replaces the thing (That book), so we have to use the relative pronoun which => type A, B
The phrase belong to sb: belong to whom => type d
=> That book, which is very thick, belongs to my younger sister.
That very thick book belongs to my sister.