Archit works in an office where he feels that he is being spied on. He is sure that people deliberately assign him more work as they want him thrown out on grounds of incompetence. Archit also feels that people tamper with his computer and call him from multiple numbers to attack his personal space. What kind of delusion is Archit suffering from?

The correct option is Delusion of persecution.

To understand why this is the correct answer, let's break down what delusions are and look at the specific characteristics of Archit's beliefs:
A delusion is a fixed, false belief that is held with strong conviction despite conflicting evidence. Delusions are common symptoms of various psychiatric conditions, such as schizophrenia.

1. Analyzing Archit's symptoms:
Archit believes that:

• He is being actively spied on by others.
• People are deliberately plotting against him (assigning more work to make him fail and get fired).
• Others are tampering with his computer.
• People are calling him from multiple numbers to harass him or invade his personal space.

These symptoms all revolve around the theme of being targeted, plotted against, harassed, or spied on by others who wish him harm.

2. Defining the types of delusions from the options:

• Delusion of persecution: This occurs when an individual believes they are being conspired against, spied on, cheated, followed, poisoned, harassed, or maliciously obstructed in the pursuit of long-term goals. Archit's feelings of being spied on, plotted against at work, and harassed via phone calls fit this definition perfectly.
• Delusion of grandeur: The belief that one has exceptional power, wealth, intelligence, or a special relationship with a deity or famous person. Archit does not exhibit these beliefs.
• Delusion of reference: The belief that insignificant remarks, events, or objects in the environment have personal meaning or significance directed specifically at oneself (e.g., believing a news anchor is sending them secret messages).
• Delusion of control: The belief that one's feelings, thoughts, or actions are being controlled by an external force or agency.

Because Archit strongly believes that individuals are actively conspiring, spying, and attempting to harm his career and personal space, he is suffering from a delusion of persecution.