The assembly takes more time. More workers are needed for assembly. There are fewer injuries to workers. More mistakes are made during the assembly.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Cars were once assembled completely by hand. Industrial robots now assemble many car parts. What is a positive effect of using robots?
Possibilities:
- The assembly takes more time.
- More workers are needed for assembly.
- There are fewer injuries to workers.
- More mistakes are made during the assembly.

There are fewer injuries to workers.