Answer: legal but unethical
Explanation:
A legal action are laws written and stated and expected to be followed, Ethics on the other hand means unwritten moral rules that differ from person to person or from cultures.
Clement providing his personal details to the banker who responsible for sanctioning loans is a LEGAL action also The banker using Clement’s personal information to sell him insurance policies is also legal but the banker using his personal account to sell him insurance policies is also UNETHICAL being that the banker is not required to go "above or beyond" Clement's reason for giving his personal details.