What is domain of the function? y = sqaure root 3+ 3

a. x < -1
b. x > 1
c. x > -1
d, x < 1

The domain of the function y = sqrt(3 + 3) is all real numbers, because the square root function is defined for all non-negative real numbers. So the correct option is:

a. x < -1
b. x > 1
c. x > -1
d. x < 1