Economic factors play a crucial role in determining a consumer's purchasing ability. However, the actual purchase decision is also heavily influenced by cultural factors. When considering the cultural environment, which of the following statements is false?

a) People's behavior changes in response to changes in the environment, revealing the dynamic nature of culture.
b) Self-reference criterion is the subconscious reference to one's own culture to solve problems and for general activities.
c) To avoid language translationproblems, one may apply "back-translation technique," which refers to having two people translate the same message one-way and compare the differences.
d) Back-translation technique is a much more robust method than parallel-translation technique.