Do you say my mom and dad's store or my mom's and dad's store

My mom and dad's store

Explanation: If you try to use both of those in a sentence, you'll realize that my mom's and dad's store doesn't make any sense.

there is no answer for this

answer: the first one

explanation:

explicitly is defined as “in a clear and detailed manner, leaving no room for confusion or doubt.” the rest are interpretive and not clearly proven leaving in fact possible “confusion or doubt” which explicitly, by definition cannot have.