An error in software or hardware is called a bug. What is the alternative computer jargon for it?

Leech
Squid
Slug
Glitch

The correct answer is D. Glitch.

A glitch is a short-lived malfunction or disturbance in a system, especially in a computer or electronic device. It is a common term in the computer industry and is often used to describe a minor error or problem.

The other options are incorrect. A leech is a blood-sucking parasite that attaches itself to the skin of animals and sucks their blood. A squid is a cephalopod mollusk with a long, tapered body and ten arms. A slug is a slow-moving mollusk with a soft, slimy body.

Glitch is the most common and appropriate term to use to describe an error in software or hardware. It is a short, simple word that is easy to understand. It is also a neutral term that does not have any negative connotations.