Final answer:
In a competitive corporate environment, businesses should focus on improving corporate profit without resorting to unethical practices.
Step-by-step explanation:
The question asks about a competitive corporate environment. In such an environment, it is important for businesses to focus on improving corporate profit (option B) without resorting to unethical practices. Option A, which suggests that a competitive corporate environment can encourage employees to deceive customers, is incorrect as it promotes unethical behavior. Options C and D, which suggest ignoring corporate ethics or defining ethical behavior based on current circumstances, are also incorrect as they do not prioritize ethical conduct.