Answer: c. recommend Torex, but she must disclose her investment in Torex to the client.
Step-by-step explanation:
The investment advisor is allowed to recommend Torex to her clients as she believes that it is financially sound and undervalued which means that there is a chance for her clients to earn a good enough return.
She must however disclose to them that she has an investment in the company so that they can decide on their own if this may have biased her decision towards the company as a viable investment option.