Final answer:
The term that signifies when a child becomes an adult for legal purposes is the Age of majority, usually at 18 years old in the United States. This is when one becomes legally responsible for their actions and is considered a legal adult.
Step-by-step explanation:
The term that indicates the point at which a child becomes an adult for legal purposes is A) Age of majority.
This is the age at which a person is considered to be legally responsible for their actions and is no longer considered a minor. In the United States, the age of majority is typically 18 years old, marking the transition into legal adulthood.
However, there are specific legal distinctions regarding certain responsibilities and privileges that may come at different ages, such as being allowed to vote or join the military at 18, while not being able to purchase alcohol until age 21.
In contrast, Age of consent refers to the age at which an individual is considered legally competent to consent to sexual acts, Emancipation age is when a minor has legal independence from their parents, and Legal adulthood age is a more general term that can be synonymous with the age of majority, depending on the context.
correct option A) Age of majority