Question

is this a thesis statement?
cell phone use is involved in nearly a quarter of all automobile accidents in the united states.
yes no

Explanation:

A thesis statement typically presents an argument or a claim that will be supported or explored. This statement "Cell phone use is involved in nearly a quarter of all automobile accidents in the United States" is a factual statement (presenting data/information) rather than a thesis (which would take a stance or argue a point, e.g., "Cell phone use while driving should be banned because it causes nearly a quarter of all automobile accidents in the United States"). So it is not a thesis statement.

Answer:

no