Option 1 -> Imperfection means being flawed or not perfect, which relates to quality rather than truthfulness.
Option 2 -> Gospel means absolute truth or unquestionable fact, making it a synonym rather than an antonym of veracity.
Option 3 -> Deceitfulness means dishonesty or untruthfulness, which is the direct opposite of veracity (truthfulness).
Option 4 -> Mendicant means a beggar or someone who relies on charity, unrelated to the concept of truth or honesty.
Hence, Option 3: Deceitfulness -> Veracity means truthfulness and conformity to facts, while deceitfulness represents dishonesty and misleading behavior, making them perfect antonyms -> correct