Match the columns:

Column-$I$	Column-$II$
$(a)$ Camouflage	$(i)$ Dendrobates pumilio
$(b)$ Batesian mimicry	$(ii)$ Horse-shoe bat
$(c)$ Warning mimicry	$(iii)$ Monarch butterfly
$(d)$ Echolocation	$(iv)$ Praying Mantis

(A) The correct matches are as follows:
$(a)$ Camouflage: $(iv)$ Praying Mantis - Many insects use camouflage to blend into their surroundings to avoid predators.
$(b)$ Batesian mimicry: $(iii)$ Monarch butterfly - In Batesian mimicry,a harmless species mimics the warning signals of a harmful species. The Monarch butterfly is toxic,and other butterflies mimic it.
$(c)$ Warning mimicry: $(i)$ Dendrobates pumilio - This is a poison dart frog that uses bright colors to warn predators of its toxicity.
$(d)$ Echolocation: $(ii)$ Horse-shoe bat - Bats use high-frequency sound waves to navigate and locate prey in the dark.
Therefore,the correct sequence is $(a-iv, b-iii, c-i, d-ii)$.