Correct Answer & Explanation
Option C
'Unison' refers to simultaneous performance or a state of complete agreement and accord (একতান বা মতৈক্য). Among the given options:
• Harmony means agreement, concord, or pleasing combination, which is the exact synonym.
• Discord means disagreement between people.
• Conflict means a serious disagreement or argument.
• Division means the action of separating something into parts.