According to Newton's Laws of Motion objects will continue in a straight line at a constant unless acted on by an outside.

A). location, planet
B). speed, force
C). speed, time
D). location, force

B). speed, force

The correct answer is D) location, force.

According to Newton's Laws of Motion, an object will continue in a straight line at a constant speed unless acted upon by an external force. The location of the object refers to its position in space, and the force is what causes a change in the object's motion.

The correct answer is D) location, force.

According to Newton's First Law of Motion, an object at rest will stay at rest, and an object in motion will continue in a straight line at a constant speed, unless acted upon by an external force.

To arrive at this answer, we need to understand the basic concepts of Newton's Laws of Motion and the variables involved.

Newton's First Law states that the natural tendency of an object is to maintain its state of motion (or rest) unless an external force is applied to it. In this context, the term "location" refers to the position or trajectory of an object, which remains unchanged unless acted upon by an external force.

The other variables mentioned in the options are:

A) Planet: This option is incorrect because Newton's First Law is not specifically related to the location of an object with respect to a planet.

B) Speed, Force: While force is one of the key factors mentioned in Newton's Law, speed alone is not sufficient to explain the principle of objects continuing in a straight line unless acted upon by an external force.

C) Speed, Time: Time is not directly related to Newton's First Law, and although speed is a concept involved, it alone does not explain this law accurately.

Hence, the correct answer is D) location, force, as it correctly represents the key variables involved in Newton's First Law of Motion.