Infantile amnesia refers to:

Infantile amnesia refers specifically to the difficulty of recalling memories formed during the toddler stage and early childhood, typically before the age of 3 to 4 years. This phenomenon is largely due to the way memory development occurs in the brain; as the brain matures, the neural connections and the cognitive structures that underpin memory formation and retrieval are still in flux. As a result, even though infants and toddlers may have experiences or interactions that could potentially form memories, these memories often do not get encoded in a way that makes them accessible later in life.

The developmental aspects of language and self-concept, which play critical roles in memory retrieval, are often not sufficiently developed during these early years. This means that while it may be possible for some vague memory traces to exist, the ability to recall these memories later diminishes significantly.

This understanding aligns with what is known about how consciousness and self-awareness evolve during early childhood, thereby impacting the ability to form lasting autobiographical memories. Thus, option B captures the essence of infantile amnesia by highlighting the challenges in recalling memories during that developmental window.