Option 1 -> honest: This is an antonym of fraudulent, meaning truthful and having integrity.
Option 2 -> innocent: This means free from guilt or wrongdoing, opposite to fraudulent behavior.
Option 3 -> transparent: This means open and clear in dealings, contrary to fraudulent nature.
Option 4 -> deceptive: This means deliberately misleading or dishonest, which directly aligns with fraudulent.
Hence, Option 4: deceptive -> Fraudulent refers to someone who engages in deceit, trickery, or dishonest practices, making "deceptive" the closest synonym as both words describe untrustworthy and misleading behavior. -> correct