Question

which of the following statements best describe why the dead seas water levels are decreasing?
the dead sea is the final destination for the water of the jordan river, there is no outlet.
high levels of salt make the dead sea a poor environment for aquatic life.
more water is being siphoned off the jordan river for agriculture.
the extraction of numerous minerals has left the sea at risk of shrinking.

Explanation:

The main reason for the decreasing water levels of the Dead Sea is that more water is being diverted (siphoned off) from the Jordan River for various uses like agriculture, etc. High salt levels and mineral extraction are not the primary causes for the decrease in water levels. The fact that it's the final destination and has no outlet doesn't explain the decrease.

Answer:

More water is being siphoned off the Jordan River for agriculture.