The answer is A. Slow twitch.
People have two general types of skeletal muscle fibers: slow-twitch (type I) and fast-twitch (type II). Slow-twitch muscles help enable long-endurance feats such as distance running, while fast-twitch muscles fatigue faster but are used in powerful bursts of movements like sprinting.
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"Are you going near the post office?" Mrs. Ried asked her husband. "Yes," he said "is there anything you want?" "Could you get me a small resgisetred envelope please?" Mr. Reid said, "I've got to send some money for my sister in Guyana." Mrs. Reid said. "I'll get a couple it may be useful to have a spare available."
The issue showed in this excerpt of A Modern proposal is poverty, and the author deal with it satirizing the economy of the nation and the responsibility of the government to take care of sick and old people that are not able to work and be productive.
These people become a burden to the nation, that does not want to deal with them but hide the poverty, by saying they are concerned about the poor people.
Answer:
Private companies do not have the technological expertise. The U.S. government will not permit private companies to build colonies. Since building a colony will not be profitable, private companies will not make the effort.