Noun of ‘True’ is

A Truthfully

B Truthful

C Truly

D Truthfulness

Correct Answer: Option D

• Truthfully (সত্যই)- adverb
• Truthful (সত্যবাদী)- adjective
• Truly (সত্যি)- adverb
• Truthfulness (সত্যবাদিতা)- noun