Final answer:
The word 'piquant' best describes a face that is attractively engaging and matches the playful 'mischievous lights' in her eyes. The option (3) is correct.
Step-by-step explanation:
She was slim and dark, with a piquant face and fascinating hazel eyes that shot out mischievous lights. When describing someone's physical appearance in literature, authors often use descriptive adjectives to paint a vivid picture for the reader. The term piquant is particularly suited to describe a face that is attractive interestingly or charmingly, often with an element of sharpness or spiciness that engages attention.
This choice of word suggests a lively and engaging personality that matches well with the 'mischievous lights' coming from her eyes. Other options such as 'metallic' and 'garbled' do not appropriately describe a human face, while 'predatory' would imply a more aggressive or menacing appearance, which does not seem to align with the playful description given. Therefore, option (3) is correct.