In the question below, a sentence is given with two words missing. You are given five options each containing a pair of words that can or cannot be filled in the blanks to make the sentence contextually and grammatically correct. Identify the words that are opposite in meaning and make the sentence contextually and grammatically correct. For example, multiple studies have found that optimistic individuals have ______ survival rates when diagnosed with cancer and other chronic illnesses, whereas 'realistic acceptance' of one's prognosis has been linked to ______ life expectancy.