Your question is Selenium Grid and Data-Driven Testing. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain how you would design a data-driven Selenium test suite using Selenium Grid, including how you would choose between findElement and findElements and how you would capture screenshots when a test fails.