Final answer:
In early life, genetic traits are more distinct, while environmental factors become more influential as people age.
Step-by-step explanation:
The correct answer is C) Inherited traits, environmental factors.
In early life, genetic traits are more distinct as they are inherited from parents and play a significant role in shaping an individual's characteristics. As people age, the influence of environmental factors becomes more apparent, and similarities among individuals become more prominent.
For example, in early life, genetic traits such as eye color and blood type are more distinct and can vary significantly from person to person. However, as individuals age, factors such as lifestyle, diet, and exposure to environmental factors become more influential, leading to more similarities in traits among the elderly.