Answer:
D) Private SaaS
Step-by-step explanation:
THESE ARE THE OPTIONS FOR THE QUESTION BELOW;
A. Community PaaS
B. Public SaaS
C. Hybrid IaaS
D. Private SaaS
From the question, we are informed about, The Costington Department store which hosted an application via the cloud. Authorized employees can access the application to submit sales and marketing data. In this case, the type of model this describe is Private SaaS.
Software as a service (SaaS) which can as well be regarded 'on demand software' as give room for accessibility to application software as well as database by users. Private Software as a Service (SaaS) model can be accessed through cloud, it can be regarded as private software since it's operation is for single organization.