Why should a coworker sign off as a witness for an engineering notebook

to double check the work

many engineers skip this essential step

because fraud is common in engineering

this step is needed only for inexperienced engineers

The answer is (A) To double check the work.

A coworker or a colleague should go over the entries and confirm the events and facts on each page and then date or sign as the witness in the specified location. Apart from the witness, no one else should write on an engineer’s notebook.