How much percentage of Earth's water make up the oceans?

The correct option is 97%.

To understand the distribution of water on Earth, we can look at the breakdown of global water resources:
1. Oceans (Saline Water): Approximately 97% of Earth's water is stored in the oceans. This water is saline (salty) and cannot be directly used for drinking or agriculture without desalination.
2. Freshwater: The remaining approximately 3% is freshwater. Most of this freshwater is locked up in glaciers, ice caps, and deep underground aquifers, leaving less than 1% easily accessible as surface freshwater in lakes, rivers, and streams.

Therefore, the oceans make up about 97% of Earth's total water volume.