The correct answer is A. Tropical evergreen forests.
Tropical evergreen forests are found in the tropics, near the equator. They are characterized by warm, humid weather and a lack of a dry season. These forests are home to the greatest diversity of plant life on Earth, with an estimated 50% of all plant species found in these forests.
Tropical moist deciduous forests are found in the subtropics, between the tropics and the temperate zones. They are characterized by warm, humid summers and cool, dry winters. These forests are home to a wide variety of plant life, including trees, shrubs, and herbs.
Subtropical mountain forests are found in the mountains, between the tropics and the temperate zones. They are characterized by cool, humid summers and cold, dry winters. These forests are home to a variety of plant life, including trees, shrubs, and herbs.
Temperate moist forests are found in the temperate zones, between the tropics and the polar regions. They are characterized by cool, wet winters and warm, dry summers. These forests are home to a variety of plant life, including trees, shrubs, and herbs.
In conclusion, tropical evergreen forests have the maximum plant diversity.