Students are conducting an investigation to see which plant food causesplants to produce the most flowers. Which of the following would
make this a controlled experiment? *
A. Give all the plants equal amounts of water with plant food.
B. Use different plant foods on each group of plants.
C. Give one group of plants water without plant food.
D. Use a different variety of plants for each type of plant food.

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening