Answer:
200/cubic millimeter.
Explanation:
An opportunistic infection may be defined as the infection that normally do not affect but become pathogenic in the favorable environment. The individual with the weakened immune system gets the opportunistic infection more than the normal individual.
The blood tests are performed to check whether the individual has the opportunistic infection or not. The drop of the level of the T4 cells below the 200/cubic millimeter clearly indicates the case of the opportunistic infection in the individual.
Thus, the correct answer is option (A).
Answer:
spinal cord
Explanation:
The spinal cord is what makes up the central nervous 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>
The type of reinforcement schedule that is illustrated is: fixed-ratio schedule.
<h3>What is Fixed-Ratio Schedule?</h3>
Fixed-ratio schedule is a form of partial reinforcement, whereby a response is rewarded or the reinforcement is delivered only when a number of specified responses has been exhibited.
The reinforcement in the scenario given in the question is a free coffee drink. The number of responses required for reinforcement to be delivered is nine coffee drinks purchase.
Therefore, the type of reinforcement schedule that is illustrated is: fixed-ratio schedule.
Learn more about fixed-ratio schedule on:
brainly.com/question/13811123
