After studying the various sources of drugs, a group of students demonstrate a need for additional study when they identify which as an example of a synthetic source for a drug:

Here are the options to complete the question

A. plants

B. animals

C. inorganic compounds

D. genetic engineering

The CORRECT ANSWER IS D.

D. genetic engineering

Explanation:

Drugs can be produced or obtained by extracting the essential component needed from a plant source, animal source and inorganic compounds.

Genetic engineering is a synthetic source of drug production, needed to solve or make ready drugs with the aid of advanced technology/process.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.