Memory traces are present in the mind in the form of:

Correct option is B

Ans. (b)
Sol. Engrams are theoretical physical or biochemical traces of memory stored in the brain. They represent how experiences are encoded and retained in the brain’s neural pathways. The concept suggests that every memory has a neural footprint, known as an engram.
Explanation of each option:
· (a) Diagrams – Used as visual aids for learning, not actual memory traces.
· (b) Engrams – Correct answer. Hypothetical structures in the brain representing stored memories.
· (c) Pictures – May be part of memory recall but are not memory traces themselves.
· (d) Signals – Related to neural transmission, but not the stored form of memory.