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Some students grew plants of the same species

in soils with different pH values. Their data

are shown in the table above. The students

hypothesized that these plants grow best in soil

with a pH of 6.4 to 6.8. According to the

data, which of the following best supports the

hypothesis?

A Plants in Groups 5 and 6 grew the most.

B Plants in Groups 1 and 2 grew the most.

C Plants in Groups 3, 4, and 5 grew the most.

D Plants in Groups 2, 3, and 4 grew the most