Ranjeet is suffering from benign tumor.

Answer: Option D

Benign : gentle and kind.
Contagious : (of a disease) spread from one person or organism to another, typically by direct contact.
Infectious : (of a disease or disease-causing organism) liable to be transmitted to people, organisms, etc. through the environment.
Spreading : extend over a large or increasing area.
Malignant : evil in nature or effect; malevolent.

Antonym of Benign is Malignant