Which tool lets you check keywords that had the biggest negative/positive impact on a domain's rankings during a specific period?

Position Tracking is the correct answer because it monitors a website's keyword rankings over time. This allows you to track changes in position for specific keywords and identify those with the most significant positive or negative impact during a chosen period. The Keyword Magic Tool is used for keyword research and discovery, not tracking rank changes. Keyword Manager is for organizing lists of keywords, not analyzing their impact on rankings. Keyword Overview provides a snapshot of a keyword's metrics, but doesn't track historical performance or impact on a domain.