In this problem, we need to infer the direction the building is facing based on the given information. Let's break it down step by step:
Step 1: Understand the scenario
- Ms. X comes out of the building through its front door. This means the direction she faces is determined by the orientation of the door.
- The morning sun is falling on her right side. We know that the sun rises in the east in the morning. Therefore, if the sun is on Ms. X's right, it means she must be facing north (because the sun will be on the east side).
- The building is to her back. This means the building is positioned behind Ms. X, so the building must be facing in the opposite direction from where Ms. X is facing.
Step 2: Deduce the facing direction of the building
- Since Ms. X is facing north, the building must be facing the opposite direction: south.
Thus, the building is facing south. Hence, the correct answer is (D).
Final Answer: (D)