Concept:
According to Section 159 of the Indian Penal Code, when two or more persons fight in a public place disturbing public peace, it is called Affray.
• Must involve at least two persons.
• Must happen in a public place.
• Must disturb public peace.
Step 1: Understand the legal definition.
Affray occurs when:
Fight + Public place + Disturbance of peace
are all present.
Step 2: Apply the conditions.
The question says:
\[
2 \text{ or more persons fight in a public place}
\]
which matches the conditions.
Step 3: Differentiate from riot.
• Affray -- small public fight
• Riot -- unlawful assembly with force
• Abetment -- helping in crime
• Conspiracy -- planning crime
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Affray}}
\]