What would most likely occur if an experimental design specifies only a test group?
a)the experiment will lack a control.
b)the experiment will lack a purpose.
c)the experiment will not be repeatable.
d)the experiment will not have variables.

"The experiment will lack a control" is the one among the following choices given in the question that would most likely occur if an experimental design specifies only a test group. The correct option among all the options that are given in the question is the first option or option "a". I hope the answer has helped you.

Can you include the paragraph too ?