In the following questions, each set presents two sentences with two blanks. Select the most appropriate pair from the options provided to complete both the sentences and ensure coherence. (

• I The philosopher pondered the ___________________ nature of existence, his thoughts growing increasingly ___________________ as he contemplated the paradoxes of life. (I
• I The linguist immersed himself in the ___________________ nuances of an ancient dialect, remaining ___________________ to the ever-changing dynamics of modern languages.