Question

read the scenario. what is the control?
control:

scenario: a student wanted to test the hypothesis, \if the amount of antifreeze added to water increases, then the freezing point of water will decrease.\ the student set up two beakers with the same amount of liquid in each one. beaker a had 100% water. beaker b had 50% water and 50% antifreeze. both beakers were placed in a freezer with a thermometer in them. it was determined that beaker a froze at 0°c and beaker b froze at -20°c. the student repeated the experiment two more times using the same set up.

Explanation:

In an experiment, the control group is the one without the variable being tested (antifreeze here). Beaker A has 100% water, no antifreeze, so it's the control to compare with Beaker B (with antifreeze) to see the effect of antifreeze on freezing point.

Answer:

Beaker A (with 100% water)