Question: A river that was once full of fish now has very few. A new factory has been operating upstream for a year. What is the most logical hypothesis?
A.
The fish have migrated to a different river on their own
B.
Pollution from the factory may have harmed the fish population
✓
C.
People have stopped fishing in that river
D.
The fish have evolved to live on land
📖 Additional Information
The fish have migrated to a different river on their own
Pollution from the factory may have harmed the fish population
