Which example provides a complete scientific description of an object in motion? a: the tiger had to run at 50 kilometers per hour across the field to catch the zebra. b: the vibration of the jackhammer broke through the south-facing rock in under 10 seconds. c: the hiker followed the north trail a distance of two kilometers in thirty minutes. d: the hockey player sent the puck flying toward the north goal to score the winning point.

Motion is defined as the movement or displacement of an object with respect to time.

Thus, the correct answer is Option C.

Learn more about motion here:

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Explanation:

This sentence completes a scientific description because it specify the variables involved: distance and time.

Also, direction is other variable that is involved and also explained, when it says ''the north''.

It's important to say that in science, the terms used in writing activities needs to be technical, it has to be an objective language, otherwise, arguments are not valid.