Find the like terms in the expression y + 1.2y + 1.2s a y and 1.2y b 1.2y and 1.2s c y and 1.2s or d y, 1.2y, and 1.2s

"Like terms" are terms with matching coefficients. In

y  + 1.2y + 1.2s
↑          ↑
there are two y coefficients. They are the like terms. Thus, A) y and 1.2y is the correct answer.