Why are TPS$\text{'}$s critical systems?

Question $12$ options:

a$)$

They are essential components of process control systems.

b$)$

Data need to be analyzed and reported to managers to support their decision$-$making processes.

c$)$

Manual systems are subject to too much human error.

d$)$

Transactions that do not get captured can result in lost sales, dissatisfied customers, and other types of data errors.