Insurers must ensure they collect enough premium to cover potential losses while remaining competitive. One of the most important methods is maintaining a good spread of risk—diversifying exposures across different geographical areas, classes of business, and types of insureds. This spreads the impact of losses, reducing the chance that a single catastrophic event or concentration of similar risks will threaten the insurer’s financial stability.

Option B, specialization, increases dependence on a narrow market segment and may elevate risk volatility. Option C is unrealistic because insurers cannot rely solely on “superior risks,” nor can they guarantee such a selection. Option D—concentrating business in one location—is dangerous because natural disasters, economic downturns, or localized events could cause severe aggregated losses.

Thus, insurers most effectively manage loss volatility through A: a good spread of risk.