The answer to this question would be: D. higher rates of childhood insomnia
Secondhand smokes are known to cause lung problems such as bronchitis or asthma. In children, it also increases the Sudden Infant Death Syndrome or SIDS. Some research also says possibilities in higher rates of allergies. Insomnia has the least link to smokers
<span>auditory
circulatory
respiratory
integumentary
muscular
reproductive</span>
Explanation:
D we can control some of the factors but not all of them
