According to Most Grand Unified Theories,the Lifetime of a Proton

question 25

Multiple Choice

According to most Grand Unified Theories,the lifetime of a proton is

• A)10¹⁰ years.
• B)10¹⁵ years.
• C)10²¹ years.
• D)10³⁰ years

---

Definitions:

Piaget's Stages

A theory of cognitive development devised by Jean Piaget, which describes how children's understanding of the world changes through four stages of development.

Object Permanence

A cognitive development milestone in which an infant realizes that objects continue to exist even when they cannot be seen or heard.

Sensorimotor

The stage in Jean Piaget's theory of cognitive development where infants learn to interact with their environment through physical actions, from birth to about 2 years of age.

Cognitive Development

The process of growth and change in intellectual capabilities that occur from infancy through independent adulthood, encompassing processes such as learning, memory, problem-solving, and decision-making.