**Core Concept**
Laparoscopy is a surgical procedure that involves the insertion of a laparoscope, a thin tube with a camera and light, into the abdominal cavity to visualize and manipulate internal organs. It is a minimally invasive technique used for diagnostic and therapeutic purposes, offering benefits such as reduced post-operative pain and shorter recovery times compared to traditional open surgery.

**Why the Correct Answer is Right**
Laparoscopy allows for the direct visualization of internal organs, enabling precise dissection and suturing. The use of carbon dioxide (CO2) as the insufflation gas helps to create a clear visual field by inflating the abdominal cavity and pushing the bowel and other organs away from the surgical site. The laparoscope's camera and light source provide a magnified and illuminated view, facilitating the accurate identification of anatomical structures.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because laparoscopy is indeed used for both diagnostic and therapeutic purposes, including the treatment of various conditions such as gallstones, appendicitis, and infertility.
**Option B:** This option is incorrect because laparoscopy can be used for a wide range of procedures, including but not limited to, cholecystectomy, hysterectomy, and inguinal hernia repair.
**Option C:** This option is incorrect because laparoscopy is a minimally invasive technique that typically results in less post-operative pain and faster recovery times compared to traditional open surgery.

**Clinical Pearl / High-Yield Fact**
It is essential to note that the use of CO2 as the insufflation gas in laparoscopy can lead to CO2 embolism, a rare but potentially life-threatening complication. Therefore, meticulous technique and careful monitoring are crucial to minimize this risk.

**Correct Answer:** D