In the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated.
a. lysogenic
b. infectious
c. retroviral
d. lytic

The correct answer is option A. "lysogenic".

Explanation:

During a viral infection, the virus uses different cycles of reproduction to achieve its goal of replicating itself inside a host organism. In the lysogenic cycle the virus integrate its DNA into the host genome, using the host replication system to replicate its own DNA along with the DNA of the host. During this cycle the host continues to live and reproduce normally as no pathogenicity is still evident from the virus.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.