Answer: subsidiary.
Step-by-step explanation:
A subsidiary is a company that is fully or majority owned and controlled by another company, known as the parent company. In this case, Kick Start is a new company that is being fully owned and controlled by Memory Makers, an existing Belgian event-planning company. Therefore, Kick Start is a subsidiary of Memory Makers.
It should be noted that subsidiaries can operate independently, but are ultimately controlled by the parent company and are responsible to the parent company's board of directors.