The answer is: Pre operational stages.
According to piaget's theory, children will started to recognize and learn to manipulate symbols during pre operational stages.
They will start to understand hand gestures, facial expression, and voice intonation that given by other people.
Answer:
Beneficence.
Explanation:
Principle of beneficence can be defined as a moral obligation of researchers, physicians or scientists to act in a way that is beneficial to others, prevent and remove conditions that could be harmful, and rescue individuals that are in danger.
This ultimately implies that, the principle of beneficence is an ethical or moral rule that is mainly focused on promoting actions that are good and beneficial to others while limiting any potential for harm.
Hence, the principle of beneficence means that researchers should attempt to maximize the benefits of participation and take steps to identify and limit the potential for harm
C. optimistic reason being they happy and really exited for the future
