The correct option is C Camouflage
Batesian mimicry refers to the resemblance of a harmless or palatable species with that of a dangerous or unpalatable one to make predators avoid them. It is opposite to Mullerian mimicry wherein dangerous, unpalatable, or poisonous species resemble one another to make predator recognize them easily. Predators or parasites exhibiting resemblance to harmless model so that their respective prey/host can not identify them exhibit aggressive mimicry. Camouflage refers to adaptation wherein organisms blend themselves with certain surroundings to avoid predators. A walking stick insect camouflage itself to disguise and avoid their large range of predators. Thus, the correct answer is option C.