Question

Help me find the independent variable please

In an experiment, 90 newborn flies are divided evenly into three separate
groups and placed in boxes inside an incubator that is maintained at a
constant temperature of 30°C. On a daily basis, the first group is given water
containing 1 mg/mL of sugar; the second is given water containing 2 mg/mL
of sugar; and the third is given water containing 3 mg/mL of sugar. After four
weeks, the average length of the flies in each group is determined.
Which factor is the independent variable in this experiment?
A. Number of flies in a group
B. Average length of flies in a group
C. Concentration of sugar in the water
D. Temperature of the incubator

Answer 1

C. Concentration of sugar in the water

Step-by-step explanation:

The independent variable will be the variable that is changing, and the one that influences another variable.

So, in this experiment, the independent variable will be the concentration of sugar in the water.

This is because the groups of flies are given different amounts of sugar in their water, varying from 1, 2, and 3 mg/mL.

This will then impact the average length of the flies.

So, the correct answer is C. Concentration of sugar in the water