Select the most appropriate meaning of the underlined idiom in the given sentence.

Neha stood beside my sister through thick and thin.

under all circumstances

The most appropriate meaning of the underlined idiom in the given sentence is under all circumstances.

The idiom "through thick and thin" means to support someone or something unconditionally, regardless of the circumstances. The idiom is thought to have originated from the idea of walking through thick and thin, which would be difficult and challenging.

In the given sentence, Neha stood beside my sister through thick and thin means that she supported her sister no matter what. She was there for her sister through good times and bad.

The other options are not accurate descriptions of the meaning of the idiom.

• In a strange manner: This does not mean to support someone unconditionally.
• Without any result: This does not mean to support someone unconditionally.
• In good times only: This means to support someone only when things are going well, which is not the meaning of the idiom.