Final answer:
The factors in the expression 9a + 2b - 11 are the terms 9a, 2b, and -11. Each represents a combination of a coefficient with a variable, or a constant, that together constitute the whole expression. Hence the correct answer is option B
Step-by-step explanation:
The question asks which set of elements represent the factors of the expression 9a + 2b - 11. When we talk about factors in the context of algebraic expressions like this, we are referring to individual terms that are being added or subtracted. Each term is a combination of a coefficient and a variable, or simply a constant.
Therefore, the correct answer is b) 9a, 2b, -11. These are the terms that make up the expression, and each one can be considered a factor of the overall algebraic expression.
Hence the correct answer is option B