Select the option in which the given figure (X) is embedded as its part. (Rotation is NOT allowed.)

The correct answer is the option containing the figure below:

Step-by-step Explanation:

1. Analyze the components of Figure (X):

Figure (X) consists of the following key features:
- A rectangle bounding a circle.
- A circle inscribed inside the right part of the rectangle, touching its top, bottom, and right vertical sides.
- A straight line extending from the top-right corner of the rectangle down to the bottom tangent point of the circle on the lower edge.
- A triangle attached to the right side of the rectangle, sharing its right vertical edge, with a line sloping down to the extended base.

2. Search for Figure (X) in the options without rotation:

- In the fourth option's figure, looking at the lower-middle and right region:
* We can trace the exact rectangle containing the inscribed circle.
* The line starting from the top-right corner of this inner rectangle goes down to the bottom tangency point of the circle.
* The triangle attached to the right side of the rectangle is completely intact.
- Therefore, Figure (X) is embedded without any rotation in the fourth option image.

Hence, the given figure (X) is embedded in option 4.