Which of these describes the use of hieroglyphics and pictographs in ancient times? Select all correct answers. a. They were often drawn on walls
b. They were made using modern art tools
c. They record events and cultural histories
d. They are a form of signal that can be heard.

Say what answer you choose.
Explain your answer.
Say why you didn't choose the other ones and instead you choose (what you think or know it is).
If you give me the correct answer and you know it is correct then I'll give brainiest to you. (only if two people answer).

Subject : Science