Final answer:
The number of installments in the fixed-period settlement option determines the amount of the installments.
Step-by-step explanation:
In the fixed-period settlement option, the number of installments for the benefit proceeds determines the amount of the installments.
If we consider a simple example, let's say there is a settlement payment of $10,000 that needs to be divided into 10 installments.
In this case, each installment would be $1,000.
Therefore, the amount of the installments is determined by dividing the total benefit proceeds by the number of installments.