Final answer:
The number of companies working on android development is not fixed and varies with the changing dynamics of the tech industry. Well-known entities like Honda and Boston Dynamics are among those that invest in humanoid robot technologies.
Step-by-step explanation:
The exact number of companies developing androids (non-phone robots designed to resemble humans) is difficult to quantify because of the constantly evolving tech industry and the emergence of new startups.
However, significant companies known for their work on humanoid robots, or androids, include Honda, Toyota, Boston Dynamics, Hanson Robotics, and SoftBank Robotics among others.
These companies engage in cutting-edge research and development to create androids that can interact with humans and perform various tasks.
Without current data, providing a specific number such as A. 3 B. 5 C. 7 or D. 9 is challenging.
Technological advancements and industrial secrecy can result in fluctuations in the number of active projects. It is advisable to consult the latest industry reports for the most accurate figure.