Loke terms are those whose variables and exponents are the same.
For example:
10 and 6 are constants, both are like terms.
x and -8x have the same variable (x) and the same exponent (1), so both are like terms.
2y² and -9y² have the same variable (y) and the same exponent (2), so both are like terms.
So, the given value"3" is a constant, so any term that is also a constant will be considered a like term to "3". From the options listed, the only one that is also a constant is "7".
Then: 3 and 7 are like terms. (option A)