Why might a scientist chose to do fieldwork instead of a laboratory experiment?

 In a a fieldwork experiment the scientist experimentally examines an intervention in the real world. A scientist might choose a fieldwork instead of laboratory experiment in order to answer for example some behavioral questions. Often  the best observations are made in the field.
A field experiment is more suitable for investigating a wider range of factors affecting the overall result.

The development plan is the way that the company grows and the levels the employee goes up. if the plan is public to many people using an ebi server than it will rank up the employee. this being said a would be the best answer. 

The answer is c ; (; ); ($; )(