Answer:
The relative market share of the product
Step-by-step explanation:
Relative market share of a company or product is a measure that is used to compare the market of a company or product to the market of the largest company, product or competitor in the market. That is, the benchmark that is employed to estimate relative market share is the market share of the leader in the market.
Relative market share is useful in assessing the success, strength and position of a product or firm in the market.
Therefore, Heather is working on determining the relative market share of the product.