Answer:
B and C
Step-by-step explanation:
A function is a relation where each value of the first component x is associated with a unique value of the second component y.
So, to the relation remain a function, we need to select options where the x value is distinct from the x values in the table. This only happens in option B.
On the other hand, in Option C, we get that for x = 2, y = 7 and that is the same relationship showing in the table, so this answer doesn't change the function.
Then, the answers are:
B. and C.