The answer is B. Underline.
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Answer: 
Explanation: If a contestant steps beyond the edge (scratch line), his jump is disallowed; if he leaps from too far behind the line, he loses valuable distance. ... Beginning in 1948, the women's long jump has been an Olympic event.
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Answer : Option C) All exercises require a spotter.
Explanation : The local gym has some rules about spotting. The incorrect rule about spotting is that all exercises require a spotter.
This is not required with every exercise, there are several exercise which can be done without the spotter as well. Only heavy weight exercises requires a spotter to assist and support with the weights while lifting or placing down the weights used in particular exercises.