Select the one-word substitution for the given sentence: An imaginary ideal society free of poverty and suffering -

♦ Utopia
English meaning: An imaginary ideal society free of poverty and suffering.
Bangla meaning: কাল্পনিক, নিখুঁত সামাজিক ও রাজনৈতিক ব্যবস্থা; স্বপ্নরাষ্ট্র; স্বর্গরাজ্য।

Options,
- Regalia: any set of special clothes.
- Panacea: something that will solve all problems.
- Gregarious: liking to be with other people.

Source: Cambridge & Accessible & Oxford Dictionary.