Answer:
Option C.
Step-by-step explanation:
Given information:
Number of boxes lifted by Caleb = 14
Number of boxes lifted by Sergio = 12
Let c represent the weight of each box Caleb lifted.
It is given that the boxes that Sergio lifted each weighed 10 lb more than the boxes Caleb lifted. It means
The weight of each box Sergio lifted = c+10
The total number of pounds Sergio lifted is the product of number of boxes lifted by Sergio and the weight of each box lifted by Sergio.
The required expression is 12(c+10). Therefore, the correct option is C.