Select the most appropriate option to fill in the blank No. 1.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. based.
"To base" something on anything means to develop or form from a fact, opinion, or event. Here, the speaker formed their opinion i.e. based their policy on the hopes of befriending her.
Hence, option 1 i.e. based is the correct answer.