Amarketing manager wants to know why her sales are down. she talks with several sales reps and finds that a competitor has introduced a successful new product. this "research" is likely to be part of

The situation analysis.

Explanation:

A situational analysis is a part of market research that assesses who your competitors are, your potential customers, your projected growth and the actual situation of your business opportunities and weaknesses.

This assessment is called SWOT analysis (Strengths, Weaknesses, Opportunities and Threats), which is a matrix-based strategic planning technique that aims to assist in the definition and visualization of relevant data about the company's internal and external environment. It is a simple system that helps the company to position itself in the market and evaluate its strategic position in the market in which it operates.