Final answer:
After performing all the described turns from a northwest orientation, Reena is now facing a) North.
Step-by-step explanation:
Reena was originally facing northwest. She made several turns as described in the question:
- First, she turned 90 degrees in the anticlockwise direction, which would have her face southwest.
- Second, she turned 180 degrees in the anticlockwise direction, now facing northeast.
- Finally, she turned 45 degrees in the clockwise direction, which would then have her facing exactly north.
Thus, Reena is now facing North.