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.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.