Answer:
Maturation change in the central nervous system
Explanation:
<em> As the child begins to develop they have a short attention spans; the ability for keeping an attention to a time.</em>
<em>The ability for having a sustainable attention improves gradually in childhood and adolescence. these improvements is called the maturation changes in the central nervous system
</em>
<em>Even when children are playing with toys, Gadgets or watching Television they are often distracted most times and their attention is becomes divided and they cannot interdict or capture irrelevant task thought processes.</em>
Its known as the flight or flight. comes from the smypathetic system
Measles<span> virus infection is presumed to be sustained through an unbroken chain of</span>human-to-human transmission. So the term I would use is Human Reservoirs because m<span>any common infectious diseases have human reservoirs. Diseases that are transmitted from person to person without intermediaries . And measles is an example of Human reservoirs. </span>
