Because her coworker Rita kept her eyes on her work and never said much, Laura concluded that Rita wasn't very smart. But when a new procedure was introduced on their floor and Laura made several errors, Rita showed her a simple way to remember each step. Laura made the mistake of

Afailing to take responsibility for her mistakes.

Bfailing to listen to others.

Cmisjudging other people's abilities.

Dhaving a low level of self-esteem.