Final answer:
Amber was initially facing the Aviary.
Step-by-step explanation:
To determine which enclosure Amber was facing at the start, we need to understand the directions of the turns and the resulting facing direction. A three-quarter turn anticlockwise is equivalent to a 270-degree turn anticlockwise. Starting from the cafe, the enclosures in the zoo map are arranged in a clockwise direction, so the enclosure that is 270 degrees anticlockwise from the cafe is the Aviary. Therefore, Amber was initially facing the Aviary.