Correct Option: D

bliss (Noun) : extreme happiness
misery (Noun) : distress ; poverty; great suffering of the mind or body ; very poor living conditions
glad (Adjective) : pleased ; happy ; grateful ; very willing to do ; full of joy ; bringing joy
pleasant (Adjective) : enjoyable, pleasing or attractive ; friendly and polite
enjoy (Verb) : to get pleasure ; to be happy and get pleasure from what you are doing