Extensively tested and generally accepted : educated guess that has yet to be tested a) hypothesis : theory b) theory : hypothesis c) observation : theory d) observation : hypothesis

The correct answer would be B) theory: hypothesis.

A hypothesis refers to the proposed or tentative explanation of any physical or natural process.

It usually provides the first step of any research or experiment.

It is highly testable as it is tested with the help of a number of scientific experiments and observations et cetera.

In contrast, a scientific theory is a well-proven explanation of aspects of the natural world. It is based on facts which have been confirmed through experiments and observation.

they kick it to the curb.

explanation:

that current was nasty.