What does "-scope" or "-scopy" relate to in medical terms?

In medical terminology, the suffix "-scope" or "-scopy" specifically refers to instruments used for observation or the processes involved in visually examining a part of the body. For instance, a "microscope" is an instrument that allows for the observation of small objects that cannot be seen with the naked eye, while "endoscopy" involves using a scope to visualize the interior of a hollow organ or cavity in the body, such as the gastrointestinal tract. This observation can be crucial for diagnosis, monitoring, or surgical purposes.

The other terms do not align with the meaning of the suffix. For example, while "condition or process" captures aspects related to medical conditions, it does not directly relate to observation tools. "Tumor" denotes a specific pathological finding rather than a method of examining. "Joining in a seam" is a general term unrelated to medical observation. Thus, the correct answer clearly reflects the function of observation linked to the suffixes "-scope" and "-scopy."