Answer: e. Most experts recommend a heavy reliance on advertising in building a firm's brand.
Explanation:
There are many ways to build a brand and while advertising is one of them, it is not the major one and experts would not recommend that a heavy reliance is placed on it.
Rather a brand can be built by instituting a robust brand management system to ensure that the brand grows through actions that show integrity and personality that will attract people to the brand regardless of if it is being advertised or not.