(A) The zoo official said that if the rains didn’t stop they would have to move the animals to another place
(B) The zoo official said that if the rains are not stopping they would have to move the animals to another place.
(C) The zoo official will say that if the rains don’t stop they would have to move the animals to another place.
(D) The zoo official had been saying said that if the rains don’t stop they would have to move the animals to another place.