Two Longtime Friends,Joyce and Laurie,want to Get Back in Touch

Multiple Choice

Two longtime friends,Joyce and Laurie,want to get back in touch with their childhood friend Rhonda,but they do not know whether she still lives in the area.Joyce randomly selects phone numbers from the local phonebook and asks people if they know Rhonda.Laurie calls numbers listed in the local phonebook for people who have the same last name as Rhonda.Joyce has approached the problem with a ________ approach,whereas Laurie has approached the problem with a(n) ________.

A) heuristic; trial-and-error approach
B) trial-and-error; algorithm
C) algorithm; utility theory
D) trial-and-error; heuristic