The motor neurons of fast twitch glycolytic muscle fibers activate a greater number of muscle cells than slow oxidative muscle fibers, thus increasing the speed and force of muscle contraction.
Comparison between: the motor neurons of fast twitch glycolytic muscle fibers vs the motor neurons of slow oxidative muscle fibers
motor neurons: Subject
activate: Verb
increasing the speed and force of muscle contraction: Present Participle modifier after a comma is modifying the preceding clause A. The motor neurons of fast twitch glycolytic muscle fibers activate a greater number of muscle cells than slow oxidative muscle fibers, thus increasing
Incorrect Comparison : The motor neurons of fast twitch glycolytic muscle fibers Vs slow oxidative muscle fibersB. The motor neurons of fast twitch glycolytic muscle fibers activate a greater number of muscle cells than do slow oxidative muscle fibers, increasing
Incorrect Comparison: The motor neurons of fast twitch glycolytic muscle fibers activate vs slow oxidative muscle fibers activateC. The motor neurons of fast twitch glycolytic muscle fibers activate a greater number of muscle cells than do those of slow oxidative muscle fibers, increasing
Correct comparison and modifier
D. Because they activate a greater number of muscle cells than slow oxidative muscle fibers, the motor neurons of fast twitch glycolytic muscle fibers increase
Incorrect Comparison: the motor neurons vs slow oxidative muscle fibersE. Because the motor neurons of fast twitch glycolytic muscle fibers activate a greater number of muscle cells than do those of slow oxidative muscle fibers, it increases
Pronoun issue: it is use for singular noun
Motor neurons are plural