Answer:
Experimental; control
Explanation:
In research, the term experimental condition refers to the group of participants that receive a treatment (in order to manipulate the independent variable of the study).
These participants oppose to the ones who are in the control condition who are the ones that do not receive any kind of treatment and that will also be measured in order to compare the differences between the two groups.
Therefore, the experimental condition refers to the group that receives the treatment and the control condition refers to the group that does not receive the treatment.