The correct answer is a) rubber. Rubber trees are able to grow in acidic soils with a pH of 4.5 to 6.5. They are also tolerant of drought and low temperatures. Coffee trees are able to grow in acidic soils with a pH of 5.5 to 6.5. They are also tolerant of drought and low temperatures. Paddy rice is able to grow in acidic soils with a pH of 5.0 to 6.5. It is also tolerant of waterlogging and flooding. Banana plants are able to grow in acidic soils with a pH of 5.5 to 6.5. They are also tolerant of drought and low temperatures.
Rubber trees are the most tolerant of soil acidity because they have a special root system that allows them to absorb nutrients from the soil even when the pH is low. Coffee trees are also tolerant of soil acidity, but they are not as tolerant as rubber trees. Paddy rice is not as tolerant of soil acidity as rubber trees or coffee trees, but it is still able to grow in acidic soils. Banana plants are the least tolerant of soil acidity of the four crops listed. They will only grow in acidic soils if the pH is above 5.5.