''An insufficient intake of folic acid—a common B vitamin—in the mother's diet is a key factor in causing spina bifida<span> and other neural tube defects.'' the answer is c
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Cervical plexus I believe
Explanation:
The vagina is highly acidic. This low pH comes from the microbes that live in female genitalia. On the mucous membranes, those are primarily lactic acid bacteria (from the genus Lactobacillus). These bacteria produce lactic acid, just as they do when they turn milk into yoghurt.
Cardiorespiratory fitness is the ability of the respiratory systems to efficiently transfer oxygen and nutrients to skeletal muscles.
