Select the option that can be used as a one-word substitute for the given group of words.
An order of law requiring people to remain indoors.

Correct option is B

The correct one-word substitute for the given group of words is "curfew."
Explanation:
· Curfew refers to an official order that restricts people from leaving their homes during specified hours (निषेधाज्ञा).
· Example: The government imposed a curfew to maintain order during the riots.
Meanings of other options and why they are incorrect:
· Restriction: A general limit or control (प्रतिबंध). (Too broad to describe the given context.)
· Limit: A boundary or extent (सीमा). (Does not specify the legal nature of staying indoors.)
· Check-in: The act of registering at a place (जांच-पड़ताल). (Irrelevant to the context.)