✔ 最佳答案
1. please refer to the Wikipedia link on what Focus Group is all about.
In the world of marketing, focus groups are seen as an important tool for acquiring feedback regarding new products, as well as various topics. In particular, focus groups allow companies wishing to develop, package, name, or test market a new product, to discuss, view, and/or test the new product before it is made available to the public. This can provide invaluable information about the potential market acceptance of the product.
2. YES, they can be carried out at the same time. However, in practice, company usually cannot afford so much resources ($ and manpower) to perform them altogether.
3. NO, not at all. All of these activities are for FACT Finding purposes. There is no relationship of which one to be conducted first. The main point is the one who want to carry out these activities MUST know what INFOrmation he/she is looking for during the research.
### others pls do NOT copy my reply