Which statement best describes an Index Lease?

An Index Lease is characterized by its mechanism for adjusting rent payments based on economic conditions, typically tied to an index such as the Consumer Price Index (CPI). This type of lease ensures that rent payments fluctuate in relation to the specified economic index, allowing for automatic adjustments that reflect inflation or other economic changes over time.

The other options do not accurately capture the essence of an Index Lease. For example, stating that rent payments remain constant throughout the lease contradicts the fundamental nature of an Index Lease, which is designed specifically to allow for variation in rental payments based on economic factors. Additionally, suggesting that an Index Lease is commonly used in residential properties is misleading, as this type of lease is more often found in commercial real estate contexts where the economic conditions have a more direct impact on operational costs and rental rates. The mention of additional charges for maintenance does not pertain to the core concept of how rent is structured or adjusted in an Index Lease, which primarily focuses on rental payments rather than other costs.