In each of the following questions, an idiom or phrase is given followed by three sentences (I, II, and II

• I illustrating its usage. Determine which of the sentences use the idiom correctly in terms of grammatical structure and figurative context, and choose the appropriate option. PAT ON THE BACK I. While a mere pat on the back from the demanding chief executive was a pleasant superficial morale booster, the overworked software engineering team was genuinely hoping for tangible financial bonuses. II. The lead biomedical researcher deserved a substantial pat on the back for her groundbreaking discovery, which successfully synthesized a completely non-toxic alternative to industrial plastics. III. The veteran structural engineer sustained a painful pat on the back when a heavy, unanchored steel girder collapsed unexpectedly during the construction of the metropolitan high-rise tower.