Answer: Option (D) is correct.
Step-by-step explanation:
Correct option: people losing a job when their skills become obsolete due to technological innovations.
Structural unemployment is a part of involuntary unemployment in which people want to work but unable to find a work. In structural unemployment, their is a mismatch between the skills of the workers and the skill that employers demanded.
If there is an improvement in the technology innovations then this will result in a structural unemployment because the worker's skills are the same but there will new technology.
Hence, they are unable to cope up with the advanced technology, as a result they are loosing their jobs.