Question

question: which hypothesis states that viruses came from living cells that were once capable of reproduction but lost complexity over time? answer options: select one of four regressive progressive coevolution retrogressive

Explanation:

The retrogressive (or regressive) hypothesis for virus origin suggests viruses evolved from once - independent living cells that lost complexity (like the ability to reproduce independently) over time. The progressive hypothesis proposes viruses originated from genetic elements gaining more functions. Coevolution hypothesis says viruses and cells evolved together. Among the options, "Retrogressive" (or sometimes called regressive) matches the description of viruses coming from living cells that lost complexity.

Answer:

Retrogressive