In this text, you are informed on what the term "Sandwich generation" means. You are then provided an example (2nd sentence). The example can be found when the transition word <em>for instance</em> is used. From this information, you should be able to conclude that the correct answer is a. definition and example.
Everybody has gone through life differently so when someone goes through something or sees something they see it differently compared to someone older,younger,more mature or less mature.
