A small business's Instagram post about a new product reaches far fewer followers organically than a similar post did two years ago, even though follower count has grown. This is most directly explained by:

Correct Answer: B) Changes in the platform's ranking algorithm, which increasingly favors paid promotion and high-engagement content over organic reach  —  a falling organic reach despite a growing follower base is a hallmark signature of algorithm changes that increasingly prioritize paid or high-engagement content over plain organic posts. Why the other options are excluded: • A is an unfounded assumption — the question gives no information about product quality, only about reach. • C is factually unlikely and unrelated — internet penetration has generally grown, not declined, and doesn't explain algorithm-driven reach changes. • D (market saturation) doesn't explain why the SAME business's organic reach fell relative to its own past performance. Example (Pension Sector): This is why PFRDA/NPS retirement-awareness content on social media increasingly needs paid promotion — organic reach to audiences not already engaged with financial content has declined due to similar algorithm shifts.