Answer:
Option B: 4.5a + 4b + 2.25c
Explanation:
Because if you work it out and write down everything then one of the things you write down should be 1.75a + 2.25b + 2.75a + 2.25c + 1.75b = 4.5a + 4b + 2.25c. The underlined portion is when you combine like terms.