Why did the author begin the article by mentioning the coronavirus?

A
because it underscores a reason why people have lower immune systems
B
because it shows that people who are stressed are more likely to get flu-like illnesses
C
because it highlights a reason why more Americans are engaging in stress-eating
D
because it shows that stress-eating can have a positive effect on those who are sick

link:https://newsela. com/read/stress-eating/id/200100710 4/quiz/question/0/?collection=339

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).