Welcome to your interview.
The question is on your right: LED Driver and Schematic. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Draw a hardware schematic to control an LED using a microcontroller GPIO pin, including necessary current-limiting resistors, and write a clean C driver to control it.