The group of insects that have mouth parts adapted for both piercing and sucking is...

Explanation

The question is asking about a group of insects that have mouth parts that are adapted for both piercing and sucking. The options are A) cockroaches, aphids, and mosquitoes, B) aphids, houseflies, and moths, C) mosquitoes, tse-tse flies, and aphids (which is the correct answer), and D) aphids, beetles, and grasshoppers. Insects have different types of mouthparts, which are adapted to their feeding habits. Some insects have mouthparts adapted for biting and chewing, while others have mouthparts adapted for piercing and sucking. In this question, we are looking for the group of insects with mouthparts adapted for both piercing and sucking. Option A includes cockroaches, aphids, and mosquitoes, but cockroaches have mouthparts adapted for biting and chewing, not piercing and sucking. Therefore, option A is incorrect. Option B includes aphids, houseflies, and moths. While aphids have mouthparts adapted for piercing and sucking, houseflies and moths have mouthparts adapted for sponging and sucking. Therefore, option B is incorrect. Option C includes mosquitoes, tse-tse flies, and aphids. Both mosquitoes and tse-tse flies have mouthparts adapted for piercing and sucking, and aphids also have mouthparts adapted for piercing and sucking. Therefore, option C is the correct answer. Option D includes aphids, beetles, and grasshoppers. While aphids have mouthparts adapted for piercing and sucking, beetles have mouthparts adapted for biting and chewing, and grasshoppers have mouthparts adapted for chewing. Therefore, option D is incorrect. In conclusion, the group of insects that have mouth parts adapted for both piercing and sucking is mosquitoes, tse-tse flies, and aphids, which is option C.