1. Read about the experiment below; then choose which of the given terms applies best or each given phrase. Martha wants to grow tomatoes to make her own salsa. She has two varieties (an heirloom tomato and a roma tomato) of tomato plants and wonders which tomato will taste better as a salsa. She grows them in the same type of soil with the same amount of light and gives them the same amount of fertilizer and water. When the tomatoes are ready to harvest, Martha makes salsa and decides the heirloom variety is the best.

1. What variety of tomato makes the best salsa?
A. control group
B. control variables
C. independent variable
D. extraneous variable
E. problem question
F. dependent variable

2. variety of tomato
A. control group
B. control variables
C. independent variable
D. extraneous variable
E. problem question
F. dependent variable

3. taste preference
A. control group
B. control variables
C. independent variable
D. extraneous variable
E. problem question
F. dependent variable