What is the main focus of chapter 3 of the book HSN002 - Mecânica dos Fluidos? The study of the movement and flow of fluid masses under the action...

What is the main focus of chapter 3 of the book HSN002 - Mecânica dos Fluidos?

The study of the movement and flow of fluid masses under the action of gravity and/or external pressures.
The quantification of the quantities involved in fluid movement.
The definition of intensive and extensive quantities.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I and II are correct.
e) I, II and III are correct.