A logic gate is an electronic circuit which

makes logic decisions
allows electron flow only in one direction
works on binary algebra
alternates between 0 and 1 values E. None of the above

The correct answer is: A. makes logic decisions.

A logic gate is an electronic circuit that implements Boolean logic. Boolean logic is a form of logical expression that uses only two values: true and false, or 1 and 0. Logic gates are used to build digital circuits, which are the building blocks of computers and other electronic devices.

Option B is incorrect because logic gates do not allow electron flow only in one direction. In fact, most logic gates allow electron flow in both directions.

Option C is incorrect because logic gates do not work on binary algebra. Binary algebra is a system of arithmetic that uses only two digits: 0 and 1. Logic gates, on the other hand, use Boolean logic, which is a system of logic that uses only two values: true and false.

Option D is incorrect because logic gates do not alternate between 0 and 1 values. Logic gates can have a variety of output values, depending on the input values.

Option E is incorrect because logic gates are electronic circuits that implement Boolean logic.