Most skeletal muscles are in pairs so that one muscle alternates with the other muscle to equalize the work load.
one muscle flexes (bends) and the other muscle extends.
one muscle does more work and the other muscle does less work.
one muscle uses more energy and the other muscle uses less energy.

Answerbasal cell carcinoma;

The question may be incomplete (there are not the possible answers), but according to the scenario, kaley and her coworkers could be in a humanitarian organization like red cross (in the us or in other countries). it's an organization which organizes health and safety services, disaster services, and blood donations.