Choose the idiom/phrase that can substitute the highlighted group of words meaningfully.
Family dispute erupted soon after grandpa's death as he left some unclear things in his will.

The correct idiom to substitute the highlighted group of words is (a) A grey area.
Given Idiom: A grey area – Meaning: Something that is unclear or undefined.
Hindi Meaning: अस्पष्ट स्थिति
Explanation:
In this context, "a grey area" fits because it refers to something unclear or ambiguous, which matches the description of grandpa's unclear will.
Meanings of other options:
· Break a leg: A way to wish someone good luck, typically in the theater.
· Beat around the bush: To avoid speaking directly about the topic.
· Crack a book: To open a book to study or read.