Fill in with relative pronoun the blank space below: The sun, ______ rays give…

Answer: 'Whose'.

Correct sentence: The sun, whose rays give life to the earth, was regarded by the ancients as a god.

Why this is correct: 'Whose' expresses possession. Here, 'rays' belong to the sun, so a possessive relative pronoun is required. 'Whose' can refer to people, animals, and (in standard usage) things.

• Why 'which' is wrong: 'Which' cannot directly show possession in this structure. A formal alternative is 'the sun, the rays of which give life to the earth,' but 'whose' is simpler and idiomatic.

• Why 'whom' is wrong: 'Whom' is an object pronoun for people and cannot indicate possession or refer naturally to things in this context.

• Why 'that' is wrong: 'That' introduces restrictive clauses but does not express possession, so it cannot replace 'whose' here.

Short tip: To show ownership in a relative clause, use 'whose' (or 'the ... of which' in more formal constructions).