Question

the state of florida purchased farmland from landowners in the everglades to stop farming activities there. the farmlands were once wetlands that were drained for growing crops. the state also removed structures that had previously disrupted the water’s natural flow. what will most likely happen if farming stops and water flows on this land again?
populations of native wetland animals will emigrate from the land.
a new community of woodland organisms will develop through primary succession.
the community of organisms currently living there will remain the same.
populations of native wetland plants will recolonize the land.

Explanation:

When farming stops and water flow is restored to formerly drained wetlands (which were once natural wetlands), ecological succession occurs. Since the soil and some seed banks or organisms may still be present (as it's a disturbance - not a completely barren start), it's secondary succession, but native wetland plant populations will recolonize. The orange option is incorrect as native wetland animals would immigrate (not emigrate) back. The blue option is incorrect as the community will change as wetland - adapted organisms return. The green option is incorrect as it's secondary (not primary) succession (primary succession is on bare, lifeless substrate like rock). So the red option (Populations of native wetland plants will recolonize the land) is correct.

Answer:

Populations of native wetland plants will recolonize the land.