Out of a sense of duty
The word dutifully means "according to your duty or responsibility."
dutifully; with care; thoroughly
I will dutifully do my job as long as I am able.
He was dutifully taken in and cared for during his last few days
Ruefully, dutifully.
no
It's dutifully
Words ending in " ly " are always adverbs.
A: Studied scripture and dutifully believed.
The minion dutifully carried out the villain's orders.
No. Duty is a noun. The most common adverb form is dutifully.
to be resolute or dutifully firm and unwavering