I'm going to go with A. radial balance
and D. the edges of the road :)
13.9
Explanation: add the amount he doesn’t in gift A (10.7) and the amount he spent on part B (5.4) and you get 16.1. The. Subtract 16.1 from 30 and you get 13.9
So if an actor is at an audition, and is asked to perform a contrasting monologue of the one they just performed, they could do so. For example, If you just performed a comedy monologue that the director liked, and they wanted to see how you portray drama, they would ask "Now can you show me a contrasting monologue?" If the actor has multiple monologues memorized, he/she could perform a contrasting one instead of saying "I only prepared this one for the audition...".
I hope this Helps!
The central idea is that using solar power is better for the economy, environment, and society.