Cathode ray oscilloscope consists of main parts ?
a. two
b. three
c. four
d. five

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

ok

explanation:

it was given as a lesson and guide for prayer.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr