Final answer:
Middle adulthood is the recognized stage of development for individuals aged 35 to 64 years. During this time, people raise families, attain career goals, and show physical signs of aging. They may also experience physical declines and an increased risk of chronic diseases.
Step-by-step explanation:
The recognized stage of development for individuals aged 35 to 64 years, often referred to as middle adulthood, lasts from about the mid-30s to the mid-60s. This is the stage of life when many adults raise a family and attain career goals. During middle adulthood, people start showing physical signs of aging like gray hair and wrinkles, and may experience physical declines such as a decrease in fertility and cognitive loss. Additionally, this stage is associated with a higher risk of developing chronic diseases such as type 2 diabetes.