Correct Answer: A
Explanation:
Step 1: Recall the definition of a subset. A subset is a small part of a bigger given set; ALL numbers in the subset must be in the original set.
Step 2: We look at the original set and then look at the answers. If there is any answer that has an element that is not showing up in the original set, than that is the right answer.
Let's look at: {3,8}. The 3 is in the original set, but the 8 is not. Since we have a number in the subset that is not in the original set, we can say that {3,8} is not a subset.
The other two answers with brackets are subsets of the original set. All elements in the subsets are present in the original set.
The empty set is always a subset of any given set.
The answer is {3,8}