Final answer:
The correct way to increment the years for this problem is option a: y₁ = y₀ + 1.
Step-by-step explanation:
The correct way to increment the years for this problem is option a: y₁ = y₀ + 1.
This means that each year, the years value will increase by 1. For example, if y₀ is 10, then y₁ will be 11.