Answer:
D) technology is continually changing.
Step-by-step explanation:
As a result of continuing emergence and dynamics in the development of technology, most especially in the areas of Information Technology, has made precise estimates costs for IT projects difficult to develop because of the following amongst others:
1. needs to hire experts with new skills relating to ethical hacking or security protection.
2. Needs for better gadgets that can execute faster
3. Constant updates on knowledge
4. Most IT projects require more than a single executionn.
Hence, the correct answer is option D.