Best Western International, Inc., a national hotel chain, paid couples to record themselves with a cell phone camera while they spent seven days on vacation. From this video, researchers for Best Western found that women usually decided when to pull off the road and where to stay. They also discovered that in a hotel room's "natural use environment," men were more likely to order room service. The observational approach Best Western used is called research.

1- experiential

2- secondary

3- neuromarketing

4- questionnaire

5- ethnographic

1- experiential

Explanation:

An experiential research is a type of research study that involves a direct and real life observation of the people being understudied, whereby the people that are being observed or understudied contributes directly to the activity that is being observed or researched as well as providing real insights in a natural settings for researchers to get or draw conclusions from.

An experiential research directly involves the participants that are being studied.

As stated in the question above, we can say the observational approach that was used by Best Western is the experiential research, as participants that are being studied were asked to record themselves with a cell phone camera while they spent seven days on vacation.

b.

c.

d.

g.

those r all of them i believe