He died as an impecunious man in a charitable hospital.

Answer: Option D

Innocent : not guilty of a crime or offence.
Ignorant : lacking knowledge or awareness in general; uneducated or unsophisticated.
Faultless : free from defect or error.
Penniless : (of a person) having no money; very poor.
Impecunious : having little or no money.

Synonym of Impecunious is Penniless