Millie might not be able to attend the play tonight because she still has to find someone to watch her two year old daughter for the night.

Which version of the sentence corrects the error in the compound adjective?

(1 point)
Responses

Millie might not be able to attend the play to-night because she still has to find someone to watch her two year old daughter for the night.
Millie might not be able to attend the play to-night because she still has to find someone to watch her two year old daughter for the night.

Millie might not be able to attend the play tonight because she still has to find someone to watch her two-year-old daughter for the night.
Millie might not be able to attend the play tonight because she still has to find someone to watch her two-year-old daughter for the night.

Millie might not be able to attend the play tonight because she still has to find someone to watch her two year old-daughter for the night.
Millie might not be able to attend the play tonight because she still has to find someone to watch her two year old-daughter for the night.

Millie might-not be able to attend the play tonight because she still has to find someone to watch her two year old daughter for the night.

The correct version of the sentence is:

Millie might not be able to attend the play tonight because she still has to find someone to watch her two-year-old daughter for the night.