Laboratory Research Suggests That Stress May Affect the Immune System

Multiple Choice

Laboratory research suggests that stress may affect the immune system through activating the sympathetic nervous system. The impact of this stress is:​

A) ​positive initially, but damaging if ongoing.
B) ​damaging initially, but positive if ongoing.
C) ​positive, both initially and also if ongoing.
D) ​damaging, whether it is initial or ongoing.