Which sentence contains a punctuation error?

Amy new brother in law is also my son's art teacher.
Bit was a beach wedding, so both the bride and maid-of-honor wore no shoes.
Cher great-aunt introduced her to the great writers from that time.
Dhis uncle drew the family tree in time for the reunion?

Verified Answer :

Answer:

A. My new brother in law is also my son's art teacher.

Explanation:

You need to use a hyphen to link a relationship term:

sister-in-law, mother-in-law, father-in-law, brother-in-law, etc.

It should be "My new brother-in-law is also my son's art teacher."