Answer:
C. Decrease the amount of weight until she can do 5 reps.
Step-by-step explanation:
Shawna can´t increase her muscular strength if she increases because she can only lift her original weight twice. Meaning if she increases she won´t be able to lift it. It would be best to decrease until she can do 5 reps because she passed two and slowly she can start increasing the amount of weight.