The answer to your question is D, OSHA requires employers to let employees of any hazardous chemicals exposed,or not.
that sound like the CPU, the central processing unit, it handles the informations and distributes it.
its C because leading is the same thing as line spacing so it basically makes space between each horizontal line
<span>The string is a sequence of characters.</span><span>
Each character in a string has an index which specifies its position in the string.
</span>The index of the first character is 0, the second character is 1, and so on.The character at the nth position has the index n.