a) Without the operating system software, it would be impossible for the computer to function. Justify the statement using four reasons. b) There are negative environmental impacts associated with the production and disposal of ICT devices. Discuss how the tech industry and consumers can work together to reduce the impact. c) Explain the application of the following types of computers. Page 1 of 2 i. Mainframe computers ii. Special purpose computers iii. Microcomputers