Which of the following represents the treatment option most likely to avoid the evolution of drug-resistant hiv (assuming no drug interactions or side effects)?
a) using a series of nas, one at a time, and changed about once a week
b) using a single pi, but slowly increasing the dosage over the course of a week
c) using high doses of na and a pi at the same time for a period not to exceed one day
d) using moderate doses of na and two different pis at the same time for several months

D

Explanation:

This is called HAART (Highly Active Anti-Retroviral Therapy) and it is currently the mainstay treatment of HIV.

Most of HAART consist in the use of 2 NRTI or NNRTI and the addition of one PI or a Integrase Inhibitor. However, the use of one NRTI plus 2 PI is valid.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

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