Closet indexing is a controversial practice where a fund manager claims to actively manage a portfolio but instead mirrors an index closely. This practice undermines the very premise of active management.

Lack of Value Addition: Investors pay higher fees for active management without receiving the expected benefits, as the portfolio closely tracks a benchmark index.

Deceptive Marketing: Funds marketed as actively managed may mislead investors, violating transparency principles.

Limited Alpha Generation: Since the portfolio resembles an index, it often fails to deliver excess returns ( " alpha " ), defeating the purpose of active management.

Regulatory Concerns: Closet indexing raises ethical questions and can lead to scrutiny by regulatory bodies.

Option C highlights the core issue of closet indexing—misrepresenting a passively managed portfolio as active, leading to higher fees without the commensurate effort or performance.