I wouls say A. Camouflage, because the definition of camouflage is hide or disguise the presence of a (person, animal, or object) by means of camouflage. (Verb)
It would be completely false to state that adult <span>brains have about five times the number of connections that a three-year-old has. The correct option among the two options that are given in the question is the second option. A child brain has twice as many connections than that of an adult brain. </span>
<span>B. Chromosomal disease results from an uncontrollable growth of abnormal cells.</span>