He bought her flowers and diamond rings. This action made her fall in love with him.

Knowledge of relative clauses

Two sentences with repetition: “This ation” replaces the whole sentence before “He bought her flowers and a diamond ring.”

→ use the relative pronoun “which” to replace the whole clause, before “which” with a comma.

=> He bought her flowers and a diamond ring. This action makes her fall in love with him.

= C. He bought her flowers and a diamond ring, which made her fall in love with him.

Answers A, B, and D are grammatically incorrect.

→ Choose the answer C