Directions: In the question, there are three / four sentences. Each sentence has pairs of words/phrases that are italicized and highlighted. Select the most appropriate word or phrase to form grammatically and syntactically correct sentences. Then, from the options given, choose the best one.

I. We must accept the artist's ingenuous (A) / ingenious (B) ability to design such an efficient machine. II. Sheila empathised (A) / sympathised (B) with the plight of her friend and promised to help her recover from the unfortunate incident. III. The eager troupe (A)/ troop (B) of sightseers wanted to visit every part of the city. IV. The punctuality of the senior staff of the company lays a good precedence (A)/ precedent (B) for the rest of the employees.