Compound modifiers. These are formed when two or more adjectives or attributes or distinguishable units are combined together to form a single noun or a unit. Normally such modified words are combined using hyphens.
The answer will be true. Whenever you are writing a narrative, you have to provide some sort of description throughout it.
Answer:
✓More than a hundred million e-mails are sent around the world each day, and they are all vulnerable to interception.
✓Other attacks include the use of viruses and Trojan horses.
✓Only a small fraction of the information flowing around the world is securely encrypted. :)
C I think is your answer. kinda stuck between C and D but I think C