Answer:
The correct answer is the option B: research similar jobs before negotiating.
Step-by-step explanation:
To begin with, in order to try to negotiate an increase in starting salary is, first of all, necessary to start searching about other similar jobs that may be good for the person as well and by doing this he could get an idea of how much such job must be paid and furthermore the person will have a contingency plan in case the superior does not want or can not raise the salary. In addition, nowadays are social medias like Linkedin whose main focus is on the labour market, and if the person puts his occupation in that media there is the chance that many employers contact him in order to make a preposition. Finally, with all that information in hand, the person could go and tell his superior that a raise would be great for the person in order to stay in the same work place rather that change his job.