Tanisha is riding her bike to class and is busy thinking about what she must do this week for her executive leadership position. She rides her bike for 10 minutes and gets to her destination. She realizes that she didn't even think about how she gripped her brakes, made turns, or avoided pedestrians on her route. She just got there. Tanisha used __________ to ride her bike. 

a) Cognitive load processing 

b) Biased processing 

c) Controlled processing 

d) Automatic processing