Why might an individual philosopher state that the focus of philosophy is ethics?
the philosopher doesn’t understand the broad scope of philosophy
the philosopher is a political philosopher
the philosopher is concerned with the principles that should govern human
the philosopher is concerned by the nature and function of language
the philosopher is concerned with the fads of the current era

The philosopher doesn’t understand the broad scope of philosophy  

Explanation:

Philosophy is a Greek word meaning "love of wisdom" and focuses on the study of fundamental problems related to existence, knowledge, truth, moral and ethical values, mind and language.

Philosophy focuses on questions of human existence, but unlike religion, it is not based on divine revelation or faith, but on reason. Thus, philosophy can be defined as the rational analysis of the meaning of human existence, individually and collectively, based on the understanding of being.

Since philosophy has a very broad focus, distributed across different areas of knowledge, we can conclude that if a philosopher says that the focus of philosophy is ethics, that philosopher does not understand the broad scope of philosophy.