Which disease can be described as infectious? 1 mononucleosis 2 cerebral palsy 3 hemophilia 4 sickle-cell anemia

The correct answer is 1. Mononucleosis

Cerebral Palsy is a neurological disorder that occurs during brain development while in the womb. Hemophilia is a blood condition that is genetic and Sickle-cell anemia is also a genetic condition. None of these are infectious. Mononucleosis or Mono otherwise know as glandular fever is an infectious disease typical in teenagers and is passed on through contact with saliva. It's a virus and spreads.

a. steroid--> influences moods in the limbic system

b. inhalant--> dissolves fatty tissue in the brain

c. marijuana--> changes how the hippocampus processes sensations