The skill that would contribute to someone's academic identity is A. Researching.
Research can be defined as a systematic investigation that is carried out by studying a specific problem and resorting to scientific methods. Researching is considered an academic skill because a great stock of knowledge is acquired when an individual is involved in this task. Moreover, most times, a research give birth to new theories; therefore, a finished research project can also contribute to increase the body of knowledge of the audience.