Final answer:
The thesis statement describes the impact of the chosen event or issue as both positive and negative.
Step-by-step explanation:
The thesis statement describes the impact of the chosen event or issue as c) Both positive and negative. It acknowledges that the event has brought about significant transformations in the specified community, country, or world, and these changes have affected various aspects of society. The statement also suggests that the transformations have had both positive and negative consequences, indicating that the impact is not solely one-sided.