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Ruby has observed that plants in her garden vary in height. She wants to investigate whether a plant species (species A) grows faster than the other garden species (species B, C, and D). Select the statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates.

Note: Consider reviewing how Ruby developed her conclusion on page 8 of this lesson to select the best answer.

(1 point)
Responses

Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A.
Ruby measures the height of a species A plant for a week and finds an anonymous gardening blog that describes the growth rate of species A.

Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.
Ruby measures the heights of several species A, B, C, and D plants, each species for one week at a time for four consecutive weeks.

Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.
Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.

Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A.
Ruby measures the heights of several species A, B, C, and D plants for a week under different conditions and finds a journal article that describes the growth rate of species A.
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1 answer

The best statement that describes Ruby gathering enough evidence to support a scientific explanation concerning plant growth rates is:

Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species.

This statement indicates that Ruby is collecting data from multiple species under controlled conditions, which allows for a valid comparison, and she is also referring to established research to support her findings.