Question

while a field extends throughout space, it lessens with ______ until it is undetectable.

• distance
• speed
• friction
• magnetism

Explanation:

In physics (a subfield of Natural Science), fields like gravitational or electric fields decrease in strength as the distance from the source increases. Speed is about motion rate, friction is a force between surfaces, and magnetism is a type of field itself, not what the field lessens with. So "distance" fits the context of a field's intensity reducing with increasing separation from its source.

Answer:

A. distance