A joint account with right of survivorship (JTWROS), the standard form of joint account in Canadian common-law provinces, meets both requirements. First, either account holder can typically provide trading instructions for the entire account, satisfying the need for trading authority. Second, the right of survivorship ensures that if one owner dies, the account's assets automatically pass directly to the surviving owner, bypassing the deceased's estate. This fulfills the wish for the assets to revert to him upon her death.

A. A nominee account is where a firm holds assets on behalf of a client; it does not describe an ownership structure between two individuals.

B. An account in his wife's name only would not give him trading authority (unless a Power of Attorney is granted) and assets would go to her estate upon death.

D. A tenants in common account does not have a right of survivorship; the deceased's share of the assets would pass to their estate, not the surviving owner.

1. Canadian Securities Institute. Investment Funds in Canada Course Textbook, Chapter 10: Opening and Servicing Client Accounts. This chapter explicitly contrasts Joint Tenancy with Right of Survivorship (JTWROS) and Tenancy in Common, highlighting the key features of survivorship and trading authority.

2. O'Sullivan, D., & Hirasawa, R. (2018). Canadian Business and the Law (6th ed.). Nelson Education. Chapter 19 discusses forms of property ownership, including joint tenancy and its feature of automatic survivorship.