Select the most appropriate meaning of the underlined idiom.

When grandmother found her granddaughter’s collection like her numismatist daughter’s, she knew her granddaughter is a chip off the old block.

A person who is similar in behaviour or actions to his/her parents

The most appropriate meaning of the underlined idiom "chip off the old block" is (2) A person who is similar in behaviour or actions to his/her parents.

The other options do not fit the meaning of the idiom.

• Changed means to have become different.
• Damaged means to have been harmed or injured.
• Getting obsessed means to be preoccupied with something to an unhealthy degree.

The idiom "chip off the old block" is used to describe someone who is very similar to their parents in terms of their personality, behavior, or appearance. It is often used in a positive way to describe someone who is a good person or who has good qualities.