Which of the following can be inferred from paragraph 1 about pollen production?

• Pollen production requires a significant investment of energy and resources on the part of the plant.
• The capacity to produce pollen in large quantities is a recent development in the evolutionary history of plants.
• Plants in the tropics generally produce more pollen than those in temperate zones.
• The highest levels of pollen production are found in plants that depend on insects or birds to carry their pollen.

This is a multiple choice.