A constructor initialization list is preceded by _____ A. a semicolon B. a colon C. two colons D. a space

The correct answer is: A. a semicolon.

A constructor initialization list

The syntax for a constructor initialization list is as follows:

“`
class MyClass {
MyClass(int x, int y) : x(x), y(y) {}

int x;
int y;
};
“`

In this example, the constructor initialization list is preceded by a semicolon. The expressions in the list are evaluated in order, and the values of the expressions are used to initialize the members of the object. In this case, the member x is initialized to the value of the expression x, and the member y is initialized to the value of the expression y.

The other options are incorrect because they are not valid syntax for a constructor initialization list.