MEDAL AND FAN!!
A sample of natural water is seen to contain a cluster of sphere-shaped bacteria, but no rod-shaped or spiral-shaped bacteria. Which of the following conclusions is best supported by this observation?
A. The bacteria in the natural water sample are not alive.
B. The natural water sample contains only one type of bacteria.
C. The natural water sample should not be viewed through a microscope.
D. The sample was collected from the wrong body of water.

Question

MEDAL AND FAN!!
A sample of natural water is seen to contain a cluster of sphere-shaped bacteria, but no rod-shaped or spiral-shaped bacteria. Which of the following conclusions is best supported by this observation?
 		A.	The bacteria in the natural water sample are not alive.
 		B.	The natural water sample contains only one type of bacteria.
 		C.	The natural water sample should not be viewed through a microscope.
 		D.	The sample was collected from the wrong body of water.

anonymous · Answer

B makes the most sense, but it is possible to have more than one kind of sphere shaped bacteria in one water sample. They SHOULD be looked at under a microscope to confirm that they belong to the same species