<span>There are various tasks that are performed by most common operating systems, and are universal across differing computers and other devices. Two important tasks are: managing communication between the software and a system's hardware abd deciding how a computer's memory and storage will be determained.</span>
Answer:
D. A firm's weighted average cost of capital decreases as the firm's debt-equity ratio increases.
Psychologists usually attempt to determine whether or not data supports a hypothesis through the use of statistics which means gathering/collecting all data facts and important information.