Why are extensions necessary in scratch programming as a whole?

this does not make any sense.. i you can reword that i can maybe you

the correct answer is a) her connection with a character

this is correct on edgnuity : )

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)