Which of the following shows fossils as evidence of continental drift?

a. limestone layers in the appalachian mountains of north america were exactly the same as the limestone in scotland's highlands
b. mesosaursus, an ancient reptile, had been discovered in south america and africa.
c. glacial deposits and rock surfaces scoured and polished by glaciers are found in south america, india, africa, and australia.
d. one type of rock found in brazil matched a rock found in western africa

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.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!