You're answer would be B. puberty, because puberty is what transforms all of your child-like traits and characteristics to adult-like ones, like when boys' voices change from high-pitched to adult low pitched.
I hope I helped! =D
For what exactly? For your crush??
Answer:
Explanation: If you think it is serious, you may have to go to the hospital. It may be a sign of a skin disease, or worse. Otherwise, you carefully wash the wound with warm water and sanitize it very carefully. Then apply antibiotic and then apply a bandage. If it doesn't heal, contact your physician.