Apersonal trainer observes a client's knees moving inward while performing the overhead squat assessment. which of the following muscles are probably underactive?
a. gluteus medius and gluteus maximus
b. adductor complex and vastus lateralis
c. lateral gastrocnemius and soleus incorrect
d. biceps femoris (short head) and tensor fascia latae (tfl)

Option C

Explanation:

Gastrocnemius and soleus muscles are jointly known as calf. Gastrocnemius is the larger muscle and connects to the knee joint while soleus is smaller muscle that connects to the portion of leg just below the knee. When gastrocnemius is stretched, the knee remains straight while when the soleus is stretched the knee bends. If a person feels difficulty in bending or stretching the knees, he/she must be facing the problem with the calf muscle. Hence, Option C is correct

really dont know just need some points

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.