Choose the exact meaning of the idiom/phrase. He burnt his fingers by interfering in his neighbours affairs.

Burnt his fingers refers to harm oneself or to suffer the outcome of ones actions. Therefore, the correct option will be option 1 i.e., got himself into trouble is the exact meaning of the phrase.As a result, it is the rightanswer.
Option 2, 3, and 4 are all incorrect. They lack the required meaning.
Option 4,the word 'rebuked' means'criticise.'