I have never seen such a slow coach like you, this small work has taken you three full month. what does the idiom ‘a slow coach’ mean? [13th BCS-বিসিএস]

(ক) an irresponsible person
(খ) a careless person
(গ) an unthougtful person
(ঘ) a very lazy person

উত্তরঃ (ঘ) a very lazy person