In the announcement, which of the following is the EARLIEST role mentioned for Dr. Alvarez?

The earliest role mentioned for Dr. Alvarez in the announcement is adjunct professor.

The announcement states that Dr. Alvarez was an adjunct professor at Brighters University prior to her work at J.G. Laboratories. This means that her time as an adjunct professor was before her time as the lab director or special research project coordinator at J.G. Laboratories.

The other roles mentioned in the announcement are the executive director of research at Martin-Stacey Biometrics and the lab director and special research project coordinator at J.G. Laboratories. However, these roles are mentioned after the role of adjunct professor, so they must have come later in Dr. Alvarez's career.