Choose the correct meaning of the underlined idiom in the given sentence.

Saira is unable to sustain friendships because she always has too many axes to grind.

To have one’s own interests to serve

The correct meaning of the underlined idiom in the given sentence is to have one’s own interests to serve.

The idiom "too many axes to grind" means to have a lot of personal or selfish motives. It is often used to describe someone who is always trying to promote their own interests, even if it means hurting others. The idiom comes from the idea of a person who has a lot of axes to sharpen, which would require a lot of time and effort.

In the sentence, Saira is unable to sustain friendships because she always has too many axes to grind. This means that she is always trying to promote her own interests, even if it means hurting her friends. This makes it difficult for her to maintain relationships with others.

The other options are not correct.

• To work for others: This is the opposite of having one's own interests to serve.
• To use weapons carefully: This is not the same as having one's own interests to serve.
• To believe in selflessness: This is not the same as having one's own interests to serve.