Yes, agreed; C-E are out, for same reason mentioned by Pransasvij.
My contention centers on choices A & B. I'll now try to explain the basis
of elimination (or choice) of either of them.
A: only if it could be proved to be a distinctly different species
(i) passive -less preferred (if it -kangaroo- COULD BE PROVED...)
Is my second reasoning correct:
(ii) underlined part not correctly connecting to the non-underlined part; thus,
making a wrong comparison:
"a distinctly different species
from other kangaroos" should be:
"a distinctly different species from that
of other kangaroos"
B: "only if it is proved to be a different species, distinct"
(i) preferred- active (if it -kangaroo- IS PROVED...)
KUDOS me if you feel my contribution has helped you.