September is building an artificial neural network that she hopes can extract useful information about the news automatically from transcripts of news broadcasts. The network feeds the transcript into a series of several hidden layers all stacked on top of each other, each finding patterns in the output of the layer before it$.$ This way of building a network is called:

Question $11$ options:

a$)$

Universal grammar

b$)$

Syntactic analysis

c$)$

Statistical learning

d$)$

Deep learning