Conference and event planners are employed by: trade and professional associations all of the above corporations and governments convention and conference centers hospitality and tourism associations

## Step 1<br />The problem is asking about the various entities that employ conference and event planners. The options provided are trade and professional associations, corporations and governments, convention and conference centers, hospitality and tourism associations, and all of the above.<br /><br />## Step 2<br />Conference and event planners are professionals who organize and manage events. They can be employed by a variety of entities, including trade and professional associations, corporations and governments, convention and conference centers, and hospitality and tourism associations.<br /><br />## Step 3<br />Given the broad range of potential employers, the option "all of the above" is the most accurate answer. This is because conference and event planners can be employed by any of the entities listed, depending on the specific needs and requirements of the employer.