**Core Concept:**
Cervical cancer, also known as carcinoma of the cervix, is a malignant tumor originating from the cells of the cervix uteri. In this question, we are discussing the management of stage IB cervical cancer. The staging system for cervical cancer is based on the tumor's size, depth of invasion, and involvement of regional lymph nodes.

**Why the Correct Answer is Right:**
For stage IB cervical cancer, the appropriate treatment approach depends on the extent of the tumor invasion. Stage IB1 involves the cervix with minimal invasion into the uterine body, whereas stage IB2 indicates more significant invasion into the uterine body.

In the context of this question, we are dealing with stage IB2 cervical cancer. The correct answer is:

**Correct Answer: c) Radiotherapy**

**Why Each Wrong Option is Incorrect:**

**A) Surgery:** While surgery can be used in some cases, radiotherapy is generally preferred for stage IB2 cervical cancer due to its ability to spare the patient from the morbidity associated with hysterectomy.

**B) Chemotherapy:** Although chemotherapy can be used as a neoadjuvant or adjuvant therapy, radiotherapy is the primary treatment modality for local control of the tumor and eradication of microscopic disease.

**D) Cryotherapy:** Cryotherapy is a local destruction technique that is typically used for superficial lesions or lesions confined to the cervix, not suitable for stage IB2 cervical cancer.

**E) Leep:** Leep (loop electrosurgical excision procedure) is a local treatment method used for cervical intraepithelial neoplasia (CIN), not for stage IB2 cervical cancer.

**Clinical Pearl:**
In the management of stage IB2 cervical cancer, radiotherapy is a preferred treatment modality as it provides local control of the tumor and reduces the risk of complications associated with surgery. This approach also helps to eradicate microscopic disease and minimizes the risk of complications such as urinary incontinence, sexual dysfunction, and infertility.