The correct option is D Lice
Arachnids is a group of organisms having jointed appendages. These are invertebrate animals which belong to the group of arthropods. They have eight legs. This group includes spiders, scorpions, ticks, mites and solifugae.
On the other hand, lice is a wingless insect of the order Phthiraptera. They are not included in the group of Arachnids.
Thus, the correct answer is option D.