Answer:
A). Confirmation bias.
Step-by-step explanation:
'Confirmation bias' is elucidated as the bias in which an individual shows a tendency to interpret, accept, or favor a particular information that confirms to their pre-existing beliefs or thoughts.
As per the given description, the director of the Information Systems is getting involved in a 'confirmation bias' as he 'ignored the limitations which he thought may contradict or possess a threat to his existing optimistic beliefs and prove the choices he made to be wrong'. Thus, he reflects a tendency to favor the only information which confirms his existing beliefs. Therefore, option A is the correct answer.