Entrance Exams
Govt. Exams
Benign means harmless, gentle, or kind. In medical terms, it refers to non-cancerous growths.
Although 'data' is technically plural (plural of datum), in modern English it's treated as singular in most contexts. The sentence is correct.
This is irony (specifically verbal irony). Mud is unclear, so saying something is 'as clear as mud' means it's actually unclear—opposite of literal meaning.
Gregarious means fond of the company of others, or living in groups. It comes from 'grex' meaning flock.
Imply means to suggest indirectly; infer means to draw a conclusion. The manager 'implies' (suggests), and workers 'infer' (conclude).
Loquacious means very talkative or fond of talking. Talkative is the direct synonym.
When 'neither...nor' connects plural subjects (teacher, students), plural verb 'were' is used. The nearest subject to the verb is plural.
Perspicacious means having acute mental perception and understanding. It refers to intellectual sharpness.
Multiple students possess books, so the plural possessive 'students'' is correct. 'Book's' would incorrectly make it possessive singular.
Tactless (lacking sensitivity) fits the context of remarks that 'created controversy'. Other options suggest positive qualities.