Gail must decide which college to attend. This will be the most important, riskiest, and most expensive decision she will ever make. She will be engaged in

A) low-involvement decision making.
B) extended problem solving.
C) habitual decision making.
D) prepurchase dissonance.
E) limited problem solving.

Gail's decision to choose a college is a high-involvement decision as it requires significant investment of time, money, and effort. It is also a risky decision as it can impact her future career prospects. Hence, Gail is likely to engage in extended problem-solving to carefully evaluate her options before making a decision.