What is the term used to describe a quantitative approach to trading that relies on equations and numbers?

How does the delta of a call option change as the spot price of the underlying asset increases?

What is the delta value of an at-the-money (ATM) option?

Which type of option tends to have the highest percentage change in premium for a significant move in the underlying asset?

Why is buying a deep in-the-money (ITM) option often compared to buying the underlying asset itself?