Which tool may a guardian use to assess the life expectancy of the ward?

Using life expectancy charts or tables is a reliable method for assessing the potential longevity of a ward. These charts provide statistical data based on factors such as age, gender, and health conditions, allowing guardians to estimate how long a ward might be expected to live. This information is crucial as it helps in planning for the ward's long-term care needs and financial management, ensuring that resources are allocated appropriately throughout the ward's life.

The other options do not directly serve the purpose of estimating life expectancy. Investment portfolio analysis focuses on financial aspects rather than health and longevity; health assessments provide information about current medical conditions but do not necessarily predict future life expectancy; and financial calculators are tools for managing and projecting financial data, which does not pertain to calculating life expectancy. Therefore, life expectancy charts/tables are specifically tailored for this purpose and are the correct choice for assessing the ward's life expectancy.