Final answer:
Old age often involves taking up new hobbies, traveling, and spending time with grandchildren.
Step-by-step explanation:
The subject of the question is related to changes that commonly happen in old age. Taking up new hobbies, traveling, and spending time with grandchildren are examples of activities that people often engage in during their old age. These activities contribute to a sense of fulfillment, happiness, and social connection during this stage of life.
Learn more about Changes that commonly happen in old age