A female nominated in a will to carry out its terms is known as a(n)?

In the context of wills and estate management, a female designated in a will to carry out its terms is referred to as an executrix. This term specifically denotes a female executor, who is responsible for ensuring that the decedent's wishes, as expressed in the will, are fulfilled. An executrix manages the estate's affairs, which includes tasks such as paying debts, distributing assets, and addressing any legal matters that may arise during the probate process.

The other terms in the question carry different meanings or connotations. "Administrator" typically refers to an individual appointed by the court to manage an estate when no executor is named in the will or if there is no will at all, and it is a gender-neutral term. "Administratrix" is an outdated term that was historically used to describe a female administrator, but it is less commonly used in modern legal terminology. "Executor" refers to a male or gender-neutral individual appointed in a will to carry out the estate's terms, but does not specify gender.

Thus, the designation of executrix specifically identifies the female role in executing the terms of a will, aligning correctly with the provided answer.