Final Answer:
The most important factor to consider when determining whether to convert term insurance at the insured's attained age or the insured's original age is the health of the insured (Option B).
Step-by-step explanation:
When converting term insurance to a permanent policy, the health of the insured is a critical factor. The conversion is typically based on the insured's original age or attained age at the time of conversion. The attained age option considers the insured's current age, while the original age option considers the age at which the term policy was initially issued. Opting for the original age can be advantageous if the insured's health has deteriorated since the policy issuance, as the premium may be based on a younger, healthier age. Therefore, health considerations play a pivotal role in making an informed decision about the conversion.
Option B is the answer.