This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to start a party planning business
Figure out what kind of party planner you would like to be.
While many party planners dabble in multiple customer and event types, most others find their niche and specialize. While you can always change your business later on, it's helpful to think of these questions in its planning phase.

OPTIONS:
(a). For example, your wedding planner may want to make sure that everyone gets the opportunity to bid and then bid your friends back. This will be a very important factor for you..
(b). These questions can help to narrow down your choices to create an easily-organized party. Discuss its routes with the chairperson of your party to work on an understanding of where to go in terms of what activities you will partake in..
(c). Check with the latest auction activities and vendors to find out the timeline regarding funding and creating your party plan. Includes most of these information on the terms of your party planning agreement..
(d). What kind of client do you want to focus on? There are two main customer markets for a party planner: corporate and social. Corporate party planners organize events, such as major meetings, retirement parties, receptions, conferences, and trade shows..
The answer is:
(d).