Severe acute respiratory syndrome (SARS) is an illness caused by a coronavirus. Symptoms include a high fever, headaches, and body aches typically occur two to seven days after infection by the virus. SARS is more serious in elderly patients. This information suggests that the reproductive cycle of the SARS virus is-

lytic, due to the quick onset of symptoms after infection

Explanation:

There are two different mechanisms by which viruses can replicate: the lysogenic cycle and the lytic cycle. The lytic cycle is a reproductive cycle where viruses hijacks the host cell's machinery in order to rapidly produce new viruses, which subsequently burst out of the host cell. On the other hand, the lysogenic cycle is a type of viral reproduction characterized by the integration of the viral nucleic acid into the host cell genome, staying hidden. In consequence, this cycle (lysogenic) is slower compared to the lytic cycle because it requires an additional step (i.e., genome integration).