Nerve impulses from will result in inspiration.
a. the preoptic nucleus of the hypothalamus
b. broca's center
c. the chemoreceptor center
d. the ventral respiratory group

Nerve impulses from  ( d ) the ventral respiratory group will result in inspiration.

Explanation:

In the brainstem , respiratory center is located in medulla oblongata and pons . The respiratory center is the combination of three major respiratory groups of neurons , which are present , one in the pons and two in the medulla  .

Pons have the pontine respiratory group , and medulla have a dorsal respiratory group and the ventral respiratory group .

Now,

the ventral respiratory group of neurons , which contains both inspiratory and the expiratory neurons .

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