The arguments for approaching life in a grave, serious and unsmiling mood is overwhelming . [Adapted from theschooloflife.com] QUESTIONS: TEXT F 5.1 Refer to lines 1-3. 5.2 5.1.1 5.1.2 Correct the concord error in the first sentence. Give a reason for your response to QUESTION 5.1.1. What is the function of the colon in line 2?​