Which may be handled with bare hands? Cooked pasta for salad

Chopped tomatoes for soup

Pickled watermelon for garnish

Canned tuna for sandwiches

Canned tuna for sandwiches

Explanation:

All of the items listed can be handled with bare hands, I assume your criteria here is cleanliness.

In that case, the answer would be D because the tuna is canned and thus, it is sealed, so handling it will not contaminate it.