please deeply explain the questions below:

1. Should retailers care about trends such as the delay or even postponement of marriage by modern Americans?

After all, how does this affect apparel retailing? Restaurant retailing? Home furnishing retailers?

2. According to the textbook what is the difference between variable and flexible pricing?

Does the demand for the item being sold affect either of these strategies?

3. Describe the three methods available to the retailer for determining the amount to spend on advertising?

Which one is the best one to use?

4. what is publicity?

Isn't this always free to the retailer?

How does publicity fit into a retailer's promotional efforts?