The correct answer is B. Structural.
Structural unemployment is a type of unemployment that occurs when there is a mismatch between the skills and abilities of workers and the jobs that are available. This can happen due to changes in technology, the economy, or the way that work is organized.
In the case of mechanization of agriculture, workers who are used to doing manual labor may no longer be able to find jobs in agriculture. This is because machines can now do many of the tasks that were previously done by hand. As a result, these workers may become unemployed.
Seasonal unemployment is a type of unemployment that occurs when there is a drop in demand for labor during certain times of the year. This can happen in industries that are dependent on the weather, such as tourism or agriculture.
Industrial unemployment is a type of unemployment that occurs when there is a decline in the number of jobs in a particular industry. This can happen due to a number of factors, such as changes in technology, the economy, or government policy.
Personal unemployment is a type of unemployment that occurs when a worker is unable to find a job due to their own personal circumstances, such as a lack of skills or experience.
In conclusion, the correct answer to the question “Unemployment due to mechanization of agriculture is” is B. Structural.