Problem: Since Eric was less coordinated than Randy,

My choice: Randy was much more comfortable learning how to skateboard.

Problem: Katrina impressed Emily with the marketing materials package she came up with.

My choice: Emily was a hiring manager.

Problem: Brett had to introduce Christopher to all the important things in the company, because

My choice: Brett is a senior developer.

Problem: Brett used poison for the bug repellent in his yard and Craig used natural ingredients,

My choice:
Brett had a more unhealthy yard.