What is the meaning of "deep" in deep learning?

What is the meaning of "deep" in deep learning?
A . To go deep into the loss function landscape.
B . The higher the number of machine learning algorithms that can be applied, the deeper is the learning.
C . A kind of deeper understanding achieved by any approach taken.
D . It indicates the many layers contributing to a model of the data.

View Answer

Answer: D

Explanation:

Reference: https://en.wikipedia.org/wiki/Deep_learning