1-4-4 13-5 15-14 19-14-1-16 3-8-1-20 1-20 20-8-5-18-5-1-12-4-10-11-5-25-5-19-3-15
= 1-4-4 13-5 15-14 19-14-1-16 3-8-1-20 1-20 20-8-5-18-5-1-12-4-10-11-5-25-5-19-3-13
Answer:
internal validity
Explanation:
because of the manipulation of the independent variable and control of extraneous variables
B and no i definitely didnt copy the person on top lol
D is the answer okay okay