Read the passage. The Mekong River delta is a spectacular and important region. The river has more than 1,000 species of freshwater fish, accounting for 25 percent of the global freshwater fishing catch. More than 20,000 plant species live in the river delta area. However, the region is under environmental threat, making conservation an important objective. Which conclusion can be drawn from this passage?
Answer
A
The Mekong River delta is a geographical area with tremendous biodiversity.
B
The Mekong River delta struggles to support different forms of aquatic life.
C
The Mekong River delta is not an important economic resource for the area.
D
The Mekong River delta regulates the balance between salt water and fresh water.
Explanation
The passage describes over 1,000 freshwater fish species and more than 20,000 plant species in the delta. This variety of living things shows that the Mekong River delta has tremendous biodiversity, so choice A is the best conclusion. The passage does not say that the delta struggles to support aquatic life or discuss saltwater balance.
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