Concept:Identify the word that is spelled incorrectly by comparing each option with its standard English spelling.
Explanation:Check each option one by one.
A. Perfidy – correctly spelled. It means deceitfulness or untrustworthiness.
B. Misanthrope – correctly spelled. It refers to a person who dislikes or avoids others.
C. Relentless – correctly spelled. It means unceasing or persistent.
D. Ingenuos – this is the incorrect spelling. The correct spelling is
Ingenuous, which means honest, innocent, and naively trusting.
Thus, the only misspelled word is 'Ingenuos'.
Answer:D. Ingenuos