I'm guessing you want a yes or no... I think yes.
Is it asking for a web site like .edu? or something like that?
Answer:
customers += newCustomer;
Explanation:
The operator += expands into + and assignment. The assignment is not overloaded so the required code is
customers += newCustomer;
This expands into
customers = customers + newCustomer;
The overloaded + operator is called for the right expression. This returns a `CustomerList`, which is then assigned through the = operator to `customers`.
A computer that passes the Turing test might show that has the ability to exhibit intelligence similar to, or indistinguishable from that of a human.