The possibility to produce a generic antiviral is extremely low becaus

Meaning: The possibilty to produce a genetic antiviral is extremely low because a virus can produce enough mutations to negate the impact of human injected medications.

Sentence structure: Main Clause: The possibilityto produce a generic antiviral is extremely low. (S-V pair is higlighted)

Dependent Clause: because a virus, depending on the host cell that it resides in and on the amount of moisture and
acidic
solvent, is able to produce enough mutations to negate the impact of any human injected medications

Modifiers: depending on the host cell that it resides in and on the amount of moisture and acidic solvent

POE :

A. virus, depending on the host cell that it resides in and on the amount of moisture and acidic solvent, is able to produce Correct

B. virus, dependent on the host cell that it resides in, the amount of moisture, and acidic solvent, is able to produce Modifier error

C. virus depending on the host cell that it resides in and on the amount of moisture and acidic solvent, produces Change in meaning.In the original sentence , we are talking about the ability of the virus to produce

D. virus, dependent on the residing host cell and the amount of moisture and acidic solvent, to produce Makes this sentence fragment ("virus to produce")

E. virus, depending on the host cell that it resides in, the amount of moisture, and acidic solvent, produces