Which sentence contains an error in the zero-versus-first conditional contrast?
If salt dissolves in water, the solution conducts electricity.
If the forecast temperature will reach 30°C tomorrow, we will move the race indoors.✓Correct answer
If the museum reaches capacity this afternoon, staff will close the doors temporarily.
If foraging honey bees find a rich food source, they communicate its location to the colony.
Explanation
The forecast sentence is erroneous because will is placed inside the condition clause. Its forecast still describes a real future possibility, so the condition needs the present form reaches.