Answer: Mitch put popcorn in the bowl and then ate it.
Explanation: A pronoun restates a noun. In this sentence “it” is the pronoun. The noun(s) preceding this could refer either to the popcorn or to the bowl. Did he eat the popcorn out of the bowl or did he eat the bowl with the popcorn in it? This is what makes this sentence unclear even though we know the obvious - you wouldn’t eat a bowl.
