Answer:
He eats food, doesn't he?
Explanation:
Tag questions are used to turn statements into questions. We use them to check the information we think may be true.
They are formed by using an auxiliary verb (e.g.<em> be or have</em>) and a subject pronoun (e.g. <em>I, we, they</em>). The auxiliary verb we will use in this sentence is <em>be</em>, and the pronoun we will use is <em>he, </em>because that is the subject of the original statement.
If the original statement is positive, the tag question is negative, and the other way around. Because the statement <em>He eats food</em> is positive, the tag question will be negative. That's how we will get the question:
<em>He eats food, doesn't he?</em>
