Also called adrenaline because it comes from the adrenal medulla, the main hormone for "fight or flight" is epinephrine insulin cortisol testosterone

The correct answer is A. Epinephrine

Explanation:

The "fight or flight response" is a physiological response that occurs due to a threat or attack and implies animals facing or avoiding the thread. This response involves the nervous system and also the adrenal medulla that produces the epinephrine or adrenaline which is one of the main hormones in the "fight or flight response" and causes muscular tension, rapid heartbeat, and dilatation of the pupil, which is part of the reactions in this response. Therefore, the hormone that is called adrenaline and that is one fo the main substances that cause the "fight and flight response" is the epinephrine.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a