Assertion (A): Several different codons encode most of the amino acids. Reason (R): If a beta-globin DNA base sequence changes from CTC to CTT during mutation, the sequence still codes for glutamic acid. Which of the following is true for the above statements?​

Why may some young adults go through a quarter-life crisis? a. they are entering middle age and feel distressed about growing old. b. they feel insecure about themselves and their future. c. they have been promoted to more secure, better-paying jobs. d. they have developed more stable personal relationships.