Correct answer: 4) much weaker
The phrase "getting much weaker" is the most grammatically correct and natural way to express the idea that he is losing strength with each passing day. The adverb "much" is used to emphasize the degree of weakness.
Correct answer: 4) much weaker
The phrase "getting much weaker" is the most grammatically correct and natural way to express the idea that he is losing strength with each passing day. The adverb "much" is used to emphasize the degree of weakness.