Why is a modified vehicle with its body raised high on risers less stable than a similar vehicle with its body at normal height?

A modified vehicle with a raised height has its center of gravity of tempered with. When the center of gravity shifts from the original place of an object to another without its overhaul or re-design, it becomes unstable and is more likely to topple over.

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.

c is the correct answer hope this !