The correct answer is: C. perform difficult operations.
Automation is the use of technology to perform tasks that would otherwise be performed by humans. It can be used to perform a variety of tasks, including those that are dangerous, repetitive, or difficult. Automation can improve efficiency and accuracy, and it can also free up human workers to focus on more complex tasks.
Option A is incorrect because automation can actually increase throughput. This is because automation can perform tasks more quickly and accurately than humans.
Option B is incorrect because automation can actually reduce assembly costs. This is because automation can eliminate the need for human labor, which can be expensive.
Option D is incorrect because automation can actually reduce the number of operations required to complete a task. This is because automation can often perform tasks more efficiently than humans.
Option E is incorrect because automation is a favorable reason for a variety of reasons, including the ability to perform difficult operations.