Final answer:
The formation of an image is influenced by SID, OID, and the focal spot, with all these factors contributing to its size, sharpness, and quality.
Step-by-step explanation:
The geometric factors that affect the formation of the image include the following:
- SID (Source to Image Distance): This is a specific object distance and the image distance associated with that object distance.
- OID (Object to Image Distance): This determines the placement of the object relative to the lens or mirror and influences image size and quality.
- Focal spot: The size of the focal spot affects image sharpness. Smaller spots result in better resolution.
In conclusion, the factors that affect the formation of the image are SID, OID, and the focal spot, which means d. All of the above is the correct answer.