Final answer:
Grandpa told Steven to be Jeffrey's role model, implying a guiding and influential relationship as Jeffrey grows up.
Step-by-step explanation:
When Jeffrey was born, Grandpa told Steven he had to be Jeffrey's role model. This often implies taking responsibility for showing good behavior and guiding Jeffrey as he grows up. It's a relationship that involves care, protection, and inspiration.
As a role model, Steven will be someone that Jeffrey looks up to and learns from, both through direct lessons and by observing Steven's actions and decisions.