Atopic list should contain
a.
main topics covered in class
c.
important vocabulary words
b.
main ideas from the textbook
d.
all of these

d.  All of these

Explanation:

Those are all important things and none should be discarded.

Important vocabulary words help you to remember better and express yourself better when talking about a subject. Knowing them is also important to understanding the same subject. Adding main topics is an obvious mandatory need of a topic list. Also, adding ideas from the text book is important to remember the main ideas and to study them later.

which lines ? : )

explanation: