Which of the following is represented by products that require significant investment to increase market share in a growing market?

The correct answer is represented by "Question Marks." In the context of the BCG Matrix, which classifies a company’s products based on their market growth and market share, Question Marks are products that operate in high-growth markets but have a low market share. This situation typically necessitates significant investment to increase market share, as the market is growing and presents opportunities for those products that can capture more of that market.

Investing in Question Marks can be crucial for companies that aim to move these products into higher market share positions, potentially transforming them into Stars, which are products with high market share and high growth. Question Marks represent both risk and opportunity; they can either become very successful or could also drain resources if they do not gain share effectively. This strategic dilemma is what distinguishes them from other categories like Stars, Cash Cows, and Dogs, each of which has different implications for investment and growth potential.