It has often been assumed that if governments limit fishing, the numbers of fish will increase, but in the case of fish such as salmon such a recovery can come about much more readily if governments were to order the removal of the dams that limit the water-flow required by spawning fish.
a) can come about much more readily if governments were to order the removal of the dams that limit the water-flow required by spawning fish.
b) would come about much more readily if governments order the removal of the dams that limit the water-flow that spawning fish requires.
c) came about much more readily if governments would order the removal of the dams that limit the water-flow required by spawning fish.
d) might come about much more readily if governments were to order the removal of the dams that limit the water-flow required by spawning fish.
e) would have come about much more readily if governments ordered the removal of the dams that limit the water flow that fish need in order to spawn.
I think B
a > refers to action in past tense , hence should not be used
b> Present tense highlights the limiting of waterflow which the fish requires
c> came about much more readily is incorrect constructions
d> were to order ... past tense
e> ordered > past tense
Please share the OA once you have it