Which action would violate the fiduciary duty of care among partners?

Engaging in gross negligence would indeed violate the fiduciary duty of care among partners. This duty requires that partners act with the care an ordinarily prudent person would exercise in similar circumstances. Gross negligence indicates a severe lack of care or a reckless disregard for the interests of the partnership and its partners. This can lead to significant harm to the partnership, which is why it represents a breach of fiduciary duty.

In a partnership, each partner is expected to make decisions that benefit the partnership as a whole, and gross negligence would indicate a failure to uphold that standard of care. For instance, if a partner disregards necessary precautions or decisions that could result in substantial financial loss or legal issues, that partner is failing in their duty to act prudently for the benefit of all partners involved.

Other activities, such as participating in partnership decisions, transacting business opportunities, or keeping detailed records, reflect valid behaviors within a partnership and do not inherently breach fiduciary duties, provided they are conducted responsibly and ethically. Thus, they do not constitute a violation of the duty of care as described.