The correct property of bases from the options provided is that bases "feel slippery."
Here is a summary of the properties:
- Bases generally have a pH greater than 7.
- They do not have a sour taste; that is a property of acids.
- Bases release hydroxide ions (OH⁻) in water, not hydrogen ions (H⁺).
Therefore, the only correct property listed is that bases "feel slippery."