Answer:
The correct answer for the given question is " assignment"
Step-by-step explanation:
In c++ = is an assignment operator .The assignment which is used to assign the value to the variable.
For example
int a=9;
The variable a is assign integer value 9
The equality operator are (==) and != so this option is wrong
Subtraction are arithmetic operator so this option is wrong
The negation operator is (!) so this option is wrong
So the correct answer is assignment.