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The table above shows the relative abund...


The table above shows the relative abundance of mosquitoes (as measured by the mosquito positive rate ) versus the flow rate (measured as a percentage of maximum flow ) of a river in China .
Which of the following is a valid conclusion from the data ?

A

The faster the river flows , the greater the abundance of mosquitoes

B

When the flow rate of the river is about half its maximum , the mosquito positive rate is between 11 and 12 percent .

C

At minimum flow rate , the mosquito population is close to 0

D

At maximum flow rate , just 2 mosquitoes were observed.

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The correct Answer is:
B
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