Final answer:
Bertrand Russell’s philosophical contributions extend beyond ethics into the fields of metaphysics and logic.
Step-by-step explanation:
Besides ethics, Bertrand Russell also posed questions that belong to other branches of philosophy, particularly metaphysics and logic. Metaphysics is concerned with the fundamental nature of existence and reality. For instance, Russell explored questions about whether certain entities exist or not, which would fall under the purview of metaphysics.
However, Russell was also significantly involved in the development of modern logic, which studies the rules of inference and deduction. Therefore, both metaphysics and logic are correct answers to the question about which other branches of philosophy Russell contributed to.
His work in these areas contributes to our understanding of the laws governing thought processes and the very nature of existence, showing the interconnectedness of different subfields of philosophy.