Match Group $(A)$ with Group $(B)$:

Group $(A)$	Group $(B)$
$(a)$ Autotrophic nutrition	$(i)$ Leech
$(b)$ Heterotrophic nutrition	$(ii)$ Paramecium
$(c)$ Parasitic nutrition	$(iii)$ Deer
$(d)$ Digestion in food vacuoles	$(iv)$ Green plant

$(A-IV, B-III, C-I, D-II)$ Autotrophic nutrition is found in organisms that synthesize their own food, such as $(iv)$ Green plants.
$(b)$ Heterotrophic nutrition involves organisms that depend on others for food, such as $(iii)$ Deer (herbivore).
$(c)$ Parasitic nutrition involves organisms that live on or inside a host to derive nutrients, such as $(i)$ Leech.
$(d)$ Digestion in food vacuoles is a characteristic feature of unicellular organisms like $(ii)$ Paramecium.
Therefore, the correct matching is: $(a-iv, b-iii, c-i, d-ii)$.