Answer:
The answer is the option
Step-by-step explanation:
Let's verify all the cases to determine the solution to the problem.
case A) we have
The domain is the interval-------> (-∞,∞)
The domain is all real numbers
case B) we have
The domain is the interval-------> (-∞,∞)
The domain is all real numbers
case C) we have
we know that
the denominator can not be equal to zero
so
The domain is the interval-------> (-∞,0) ∩ (0,∞)
The domain is all real numbers except the number zero
case D) we have
The domain is the interval-------> (-∞,∞)
The domain is all real numbers