Answer:
That is incorrect.
The correct answer choice would be D.
Explanation:
So we are asked to express the set using the roster method.
The set that we are given is:
x
This set says that x is the set of all numbers that are greater than 7.
7 would not be included in the set because technically 7 is not greater than 7.
Knowing this, we can eliminate B and C.
The set would also never end, since, there are an infinite amount of number that are greater than 7.
Knowing this, we can eliminate A (and C again). Now we are left with just D. Thus, D is the correct answer.
I hope this helps. Happy studying.