Question

A.she did not believe the new formula helped plants grow better than the old formula.

b.it was necessary to see data from more plants before the conclusion could be accepted.
c.it was necessary to have tested the fertilizer on different kinds of plants.
d.she thought he should test additional fertilizer formulas on the same two plants.

Answer 1

b.it was necessary to see data from more plants before the conclusion could be accepted.
Hope I Helped ^-^