Answer:
A. Particles no longer move.
Explanation:
A Pop critic would review a new version of a flat-screen television.
The correct answer is B. Forecasters predicted six more weeks of winter this year..
This is the only complete sentence because it contains one independent clause. An independent clause is necessary for a sentence to be complete and full. Examples A and C aren't sentences for that very reason - they are just fragments and cannot be considered complete because they lack something.
