II. Modified True or False Directions: Write True if the statement is correct. Otherwise, change the word/s that make/s the statement incorrect. 1. To ensure safety, sit at an adjustable desk specially designed for use with computers. 2. Working at a computer can cause back, neck and shoulder pains, headache, eyestrain and overuse injuries of the arms and hands. 3. You can help avoid computer-related injuries with proper furniture, better posture and bad working habits. 4. Use PPAs during hands on computer hardware tasks. 5. An operating system is the most important software that runs on a computer. 6. Without an operating system, a computer is useless. 7. Relevance pertains to the timeliness of information. 8. Authority pertains to the importance of the information to your need or how it relates to your topic. 9. Always keep your antivirus protection and antispyware software up-to-date. 10. Immediately delete messages you suspect to be spam.​