Based on the characteristics of grasshoppers, the animals that likely belong to the same group (arthropods) would be:
D) Mosquito
Grasshoppers and mosquitoes are both part of the phylum Arthropoda, which is characterized by exoskeletons, segmented bodies, and jointed appendages. The other options (tapeworms, coral, and clams) belong to different phyla and are not arthropods.