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Bot GPT 4-o mini The choice that represents velocity is:
**15 km/hr west**
Velocity is a vector quantity that includes both speed (a scalar quantity) and direction. In this case, "15 km/hr west" provides both the speed (15 km/hr) and the direction (west). The other options either represent mass (4 g/mL), speed without direction (35 m/s), or acceleration (12 m/sĀ²).