Answer: c) intrapreneur
Explanation:
Intrapreneur is the person who who belongs to a large firm and acts in the manner of entrepreneur to make innovative development ideas for any project .They help in promotion of production and innovation along with taking measures for functioning in organization.
According to the question,Lachlan Stuart is an intrapreneur who is an employee in a company .He is responsible for methods and ideas development to be ahead of other competing firms.
Other options are incorrect because in-sourced entrepreneur, corporate entrepreneur and multipreneur are not the way in which a person acts like an entrepreneur even through he/she is working for a firm.Thus, the correct option is option(c).