Question

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) 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 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.

Explanation:

To support a scientific explanation about plant growth rates, Ruby needs data that allows comparison of growth under consistent conditions or reliable references. The first option has Ruby measuring heights of multiple species (A, B, C, D) for a week under the same conditions and finding journal articles describing growth rates of each species. This provides direct data on heights (to calculate growth if initial height is known or via comparison) and peer - reviewed sources for growth rates, making it the most valid for a scientific explanation. Other options either lack consistent conditions (different conditions in third option), rely on non - peer - reviewed sources (fourth option, blog), or don't measure multiple species over time in a way that supports the specific claim (fifth option measures at different times for species, not focused on growth rate comparison for the claim).

Answer:

A. 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.