Choose the correct sentence: As he is ill, he cannot come., As he is ill, so he cannot come., He is ill though he cannot come., He is ill, he cannot come.

Choose the correct sentence: As he is ill, he cannot come., As he is ill, so he cannot come., He is ill though he cannot come., He is ill, he cannot come.

Explanation
  • "As he is ill, he cannot come." is grammatically correct because "As" introduces the reason for his inability to come.
  • Other options are incorrect due to improper conjunction use or punctuation errors.