What does the word "instinctual" suggest as it is used in this selection? Keep in mind, he says, "Biases are built in deep." In fact, he adds, "They're instinctual and hard to detect."

a
All animals experience some forms of cognitive bias.
b
Human brains are naturally susceptible to bias
c
Bias toward familiar ideas is common among young people.
d
Some biases are innate and others are acquired over time.