Answer:
Andre and<u> I </u>cooked chicken on the grill.
Explanation:
The word missing is the subject, that is to say, the one that performs the main action (cooked) of the sentence; therefore, we should complete the sentence with a subject pronoun. There are seven of them: <u><em>I</em></u><em>, We, You, He, She, It, They. </em>
The other options, on the other hand, are incorrect because <em>him, her </em>and<em> me</em>, are pronouns that do not take the place of a subject but of an object (the one that receives or is affected by the action).