Why dont you try asking google or a teacher to help you out?! :D
Its B.
becuase the radiation forms the ultra violet radiation and absobs it.
Joanna'a therapy is antibiotic therapy.
Antibiotic therapy is the therapeutic way to overcome an infection using one or more anti-infectious drugs, belonging to the class of antibiotics, and whose activity is exerted against the bacteria causing this infection. It could also be used to prevent superinfection (for example after bronchitis, cold, flu, viral infections or ear infections) or to reduce the risk of infection before surgery.
Tides and planetary orbits are caused by the moon