In a partnership, which of the following can lead to the admission of a new partner?

In a partnership, the admission of a new partner typically requires unanimous consent from all existing partners. This requirement is rooted in the nature of partnerships as contractual agreements where all partners share not just profits and losses but also the control and management of the business.

Unanimous consent ensures that all partners are in agreement about the significant decision of adding a new partner, as this can impact the dynamics of the partnership, including profit-sharing, decision-making, and liability. Each partner's stake in the partnership is significant, making it essential that any new admission reflects the collective agreement of all members involved.

The other options, while they may seem plausible, do not encapsulate the general requirement for adding a new partner under most partnership agreements. Majority approval, for example, can undermine the rights and expectations of partners who may have differing views about the suitability or impact of a new partner. Similarly, reliance on a single managing partner’s approval does not honor the equal say and shared management principle that defines partnerships. Lastly, written consent from partners contributing capital doesn't necessarily reflect the comprehensive agreement needed, as it may not include perspectives from all partners, who might not be financial contributors but still hold significant management and relational stakes in the partnership. Thus, unanimous consent is the correct