Fish conservation zones extend as much from a nations’ coast.

100miles
200miles
300miles

200 miles

Explanation:

Fish conservation zones extend as much as 200 miles from a nations' coast.

Coastal States exercising control over fisheries in the zone are naturally concerned that fishing vessels in their zones are merely passing through or are complying with applicable fishery regulations. This is to ensure that such vessels in transit do not engage in illegal fishing or otherwise violate fish conservation laws.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

real, smaller and upside-down.   so the answer should be b.