Answer:
The correct options could be 2, 3 and 4.
Explanation:
When an accident happens in a production unit, usually the work is stopped to make the things up and put them back to work. If workers gets injured due to that accident, they are replaced with the new workers immediately, and to hire the workers for this job immediately may result in the hiring of less competent workers that might do the same job in more time, thus reducing the productivity and can harm the quality of the product due to less knowledge or training about the job. Secondly, when accident happens, the work is stopped up till all security checks are done. So a lot of time is wasted and when the work gets start again, the quality could slip in effort to make up for the lost time. In this way the quality of the product may be affected and the profits of the organization may get down.