A deadly, multidrug resistant form of has been spreading and is difficult to treat. Because of the high risk of this illness, those affected must be quarantined and treated with care by healthcare workers. a. avian bird flu
b. influenza
c. malaria
d. tuberculosis
e. HIV

Option D

Explanation:

Tuberculosis is usually treated by the end of six months or early. This is done by the first line TB drugs.

This disease is resistant to many of the antibiotics which is used by in case of Tuberculosis. These drugs were initially used to treat tuberculosis.

There are chances that this disease is not cured completely and is repeated again and again if the patient is not handled carefully.

The illness is very risky as it leads to coughing along with the blood clots and many more symptoms.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!