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?

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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.

The correct version of the sentence that corrects the error in the compound adjective 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.

The correct version of the sentence that corrects the error in the compound adjective 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.

To identify the correct version, we need to understand the rule for using compound adjectives correctly. When you have a compound adjective made up of two words (two-year-old in this case), you need to use hyphens to connect the words. This is to ensure clarity and avoid any confusion about the meaning of the phrase.

In the incorrect versions provided, there is inconsistency in the use of the hyphen. The first incorrect version (to-night) uses a hyphen unnecessarily, as "to" and "night" are not used as a compound adjective. The second incorrect version (two year old-daughter) uses a hyphen between "old" and "daughter," which is incorrect placement since the hyphens should be used directly between "two" and "year" and between "year" and "old."

Therefore, the correct version 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.