Question

complete the sentence. reflexes and automatic functions such as heart rate and digestion, but it also controls the movement of eyes, arms, and legs. the brain stem controls not only not only does the brain stem control

Explanation:

The sentence structure “not only... but also...” can be inverted. When using “Not only” at the beginning of a sentence, the subject - verb inversion occurs. In the original structure “The brain stem controls not only... but also...”, when we invert it, we get “Not only does the brain stem control... but it also controls...”. The first option “The brain stem controls not only” is a normal sentence structure but doesn't fit the inversion requirement. The second option “Not only does the brain stem control” follows the correct inversion rule for the “not only... but also...” construction.

Answer:

Not only does the brain stem control