Answer: second option.
Explanation:
By definition, a function is even when:

Then, knowing this, given the function
you can substitute
into this function:

Now you need to simplify the function. Then you get:

In this case, you can see that:

Therefore, the function
is not even.
As you observed in the procedure above, the statement that best describes how to determine whether the given function is even is:
Determine is
is equivalent to
