The correct word substitute for "murder of one's parents" is:

A. Uxonicide
B. Sorronicide
C. Parricide
D. Regicide

Choose the correct answer from the options given below:

C only

The correct answer is Option (3) → C only

Here's why:

Uxoricide refers to the killing of one's wife.

Sororicide refers to the killing of one's sister.

Parricide is the correct term for the murder of one's parents.

Regicide refers to the killing of a king or queen.