45.
(A) would like
(B) rather than
(C) prefer
(D) would rather

A majority of Japanese women said that they __45__ purchase the sweet stuff for themselves on Valentine’s Day.
大部分日本女性說，情人節這天，她們寧願買甜食給自己(也不要給別人)。

(A) would like想要(want的禮貌說法)
(B) rather than寧願，而不是
(C) prefer偏好
(D) would rather寧願，較喜歡

they__45__ purchase the sweet stuff for themselves on Valentine’s Day.
空格要放動詞或助動詞
rather than是連接詞，前後面都要有動詞，而且時態一致；would rather前面不用放動詞，因為would是助動詞
prefer可以接名詞、不定詞、動名詞，這裡空格後面是purchase(原形動詞)，所以不對

1.rather than 寧願，而不是

rather than的中文意思是「寧願，而不是…」的意思。

例：
I’d like to stay at home this evening rather than go out.
我今晚更想呆在家裡，而不是出去玩。

例：
I prefer tea rather than coffee.
我更喜歡喝茶而不是咖啡。

2. would rather 用法

另一個和rather than 相似的英文用法是「would rather」，would rather 的意思是「寧願，較喜歡」的意思。

例：
I would rather go to the gym.
我寧願去健身房。

例：
I’d rather go for dinner.
我更想去吃飯。

例：
I’d rather you went for dinner.
我更想要你去吃飯。

https://tw.englisher.info/2019/09/01/rather-than-would-rather/