Answer:
C. Every salesperson should make sure the client portfolio is on his or her smartphone.
Step-by-step explanation:
Option A is incorrect because it incorrectly uses 'his smartphone'.
Option B is incorrect because it incorrectly uses 'salesman'.
Option D is incorrect because it incorrectly uses 'saleswoman'.
In recent times, as women have got a reasonable share in outdoor jobs, sports, studies, in short all spheres of life, it has become very important to avoid gender stereotypes while documenting something or even in a meeting or discussion.
One should be careful while using personal pronouns such as he/she, his/her, and him. Moreover some designations which are gender specific should also be made gender neutral, such as chairperson for chairman, salesperson for salesman. Still there may be many such words which may take long time (or never) to be made gender neutral, such as watchman, a man is known by his company.