I think it's C.) Ability to see deeply.
Because a negative tone would include words such as "not", "can't", and/or "won't"
Hi! Could you please post a picture of the excerpt? :)
Piggy suggests that since they can not have a fire on the mountain they should <span>have it on the beach</span>
The EPA is the organization I don't know exactly what the scientists are called though. Hope I helped in some way.