Answer
Frequency of stimulus can change the force of muscle twitch.
Explanation
Twitch is tension produced by the contraction of a small muscle or it is muscle fasciculation. Its strength depends on the stimulation frequency. If the frequency is higher then temporal summation takes place and produce higher tension in the muscle. If the frequency is weak then less tension is produced in the muscle. This force also depends on the cross-sectional area of muscle.
The answer is A.
b and c are opinionated and Star signs aren’t scientifically proven.
Answer:
Memories aren't just stored in one part of our brains. Different parts are stored in different brain regions, but the hippocampus is memories are formed and later accessed.
Learning can be improved by paying attention when learning something new so that you can take in the knowledge.
Explicit memories are conscious and can be verbally explained, however, implicit memories are usually nonconscious and are not verbally articulated.
Explanation: I'm sorry but I don't know the answer to your last question, so I hope you figure out the answer to that one...........also hope this at least helps you out somewhat:)