a researcher finds that white bread contains more preservatives and has a higher moisture content than wheat…

a researcher finds that white bread contains more preservatives and has a higher moisture content than wheat bread. she designs a test to determine whether the type of bread, white or wheat, affects the amount of mold growth. what must be done for the researcher to accurately measure the dependent variable?\nshe will need to allow mold to grow for more days on the white bread, since it contains more preservatives, to measure the dependent variable.\nshe will need to limit the dependent variable to white bread or wheat bread.\nshe will need to allow mold to grow for fewer days on the white bread, since it contains more preservatives, to measure the dependent variable.\nshe will need to learn how to quantitatively measure mold growth to measure the dependent variable.

a researcher finds that white bread contains more preservatives and has a higher moisture content than wheat bread. she designs a test to determine whether the type of bread, white or wheat, affects the amount of mold growth. what must be done for the researcher to accurately measure the dependent variable?\nshe will need to allow mold to grow for more days on the white bread, since it contains more preservatives, to measure the dependent variable.\nshe will need to limit the dependent variable to white bread or wheat bread.\nshe will need to allow mold to grow for fewer days on the white bread, since it contains more preservatives, to measure the dependent variable.\nshe will need to learn how to quantitatively measure mold growth to measure the dependent variable.

Answer

Answer:

D. She will need to learn how to quantitatively measure mold growth to measure the dependent variable.

Brief Explanations:

The dependent variable is mold growth. To accurately measure it, a quantitative method is required. Options A and C assume different growth - time strategies without proper measurement. Option B misidentifies the dependent variable.