On the lawn at Leeuwin when we arrived
was two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around it were flocks of noisy little green parrots called 28s, supposedly because their chatter sounds a bit like that number.
(A)was two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around it was flocks of noisy little green parrots called 28s, supposedly because their chatter sounds
(B)were two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around them were flocks of noisy little green parrots called 28s, supposedly because their chatter sounds
(C)were two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around it were flocks of noisy little green parrots called 28s, supposedly because their chatter sound
(D)were two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around it were flocks of noisy little green parrots called 28s, supposedly because their chatter sounds
(E)were two kinds of birds: one was a helicopter, waiting perhaps to whisk a moneyed client to Perth, and swooping around it were flocks of noisy little green parrots called 28s, supposedly because its chatter sounds
which is correct "their chatter sounds a bit ... " or their chatter sound a bit ..."
OA to follow . Thanks !