"To preform specific useful computing tasks, like word processing and calculation" is the correct answer. This is the whole purpose of system software. The third answer is some other type of software(third party software?) and the fourth answer is most likely a compiler. Those are the easiest to take off. The second could also work.
The two answers I would go with are the first and the second.
Answer:
New Formatting Rule.
Explanation:
Using New Formatting Rule the rule can be used in the database .Conditional formatting is used to highlight cells with different color according to the value of the cell. Conditional formatting can be done using formulas.In conditional formatting you can use if statements ,if else staements ,formulas etc.
<span>The National Science Foundation (NSF) is the organization which </span><span>developed a network called CSNET to provide a network free to all American research and educational institutions. It is an agency in the government of the United States that is responsible for research and development in the field of science and engineering. </span>
The (CPU) holds the “brains” of the computer
