Subways has always been considered a healthy choice by athletes since they offer such healthy ingredients in their sandwiches.

Who is "they" in this prior sentence?
Subways
A person is more productive on an IDE than a text editor, therefore it should be used in general practice.

Who is "it" in this prior sentence?
an IDE
Adrian Peterson has more touchdowns than Reggie Bush because he is better at running the ball.

Who is "he" in this prior sentence?
Adrian Peterson