Which type of tumor remains confined to its original location and doe…

The correct answer is Option (1) → Benign tumor

Cancer cells divide without control and form masses of cells called tumors. Tumors are of two types: benign and malignant. A benign tumor stays where it began, does not spread and causes little damage. A malignant tumor grows fast, invades nearby tissue and sends cells to distant sites through the blood (metastasis).

Option (1) Benign tumor — Correct. A benign tumor remains confined to its original location and does not spread.

Option (2) Malignant tumor — Incorrect. A malignant tumor invades and damages the surrounding tissue, and its cells spread to other parts of the body. It is the opposite of what the question asks.

Option (3) Metastatic tumor — Incorrect. Metastasis is the spread of cells from a malignant tumor to new sites, where they start new tumors. A metastatic tumor has spread, so it is not confined.

Option (4) Neoplastic tumor — Incorrect. The book calls the proliferating cells of a malignant tumor neoplastic or tumor cells. Such a tumor invades and spreads.

NCERT Extract:
Cancer – “… As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Benign tumors normally remain confined to their original location and do not spread to other parts of the body and cause little damage. The malignant tumors, on the other hand are a mass of proliferating cells called neoplastic or tumor cells. These cells grow very rapidly, invading and damaging the surrounding normal tissues.”