Final answer:
The key to lowering marketing costs and fostering a unified marketing effort is establishing a cohesive brand identity, which enhances brand recognition and market presence.
Step-by-step explanation:
The aspect that is important because it can help lower marketing costs and create a unified marketing effort is establishing a cohesive brand identity. This strategy allows for a synchronized presentation of a product or service across various platforms and mediums, making the advertising more effective and improving brand recognition. Notably, synergistic advertising practices, as discussed by Naomi Klein in her work No Logo, emphasize the power of a unified brand message conveyed through different sources and platforms. These practices highlight the importance of a cohesive brand identity in establishing a brand name that is difficult to dislodge, which is critical in monopolistic competition and can lead to oligopoly due to the significant advertising spending required to compete with well-established brands.