I would say C is the answer for this one.
2+5+8+1=16
16/4=4
4 is the average (mean)
Answer:
A.
1.0 M molecular sucrose (C12H22O11)
Prepositional phrases express position and relation in space and time and begin with a preposition. The only prepositional phrases here are 1) "in the house," 2) "through the tunnel," and 3) "in 45 minutes." So, whichever of these are underlined in the problem, the corresponding sentences are the answers. Hope that helps!