Final answer:
Jenny, who is 65 years old and likes to travel, falls within the 'late adulthood' life stage, which begins in the mid-60s. The correct answer helping to describe Jenny's life stage is 'C. late older years'. This fits the young-old subgroup of the older adult population.
Step-by-step explanation:
Jenny is 65 years old, which places her within the life stage category of late adulthood according to the provided information. Late adulthood begins in the mid-60s and continues until death. At this stage, people commonly retire and might focus on activities such as traveling or spending time with grandchildren, much like Jenny who enjoys traveling the world. The correct life stage that best describes Jenny is late adulthood (Option C. late older years).
The United States' older adult population is split into subgroups, with the young-old ranging from approximately sixty-five to seventy-four years old, which includes Jenny. Individuals in this subgroup are often happier, healthier, and more financially stable compared to previous generations. Since Jenny is in good health and traveling, she likely falls into this energetic and vivacious classification of the young-old.