According to Carole Vickers, family/home management history can be divided into four principal eras. Era one (1900-1930s) focused on:.
a. household equipment and task management.
b. household production, hygiene, and sanitation.
c. values and decision making.
d. the systems approach to quality management.

The correct answer is b. household production, hygiene, and sanitation.

Explanation:

The eras that Carole Vickers explain are

Era one (1900-1930) focused on household production, hygiene, and sanitation.

Era two (1940- early 1950) focused on household equipment and task management.

Era three (1950-1960) focused on values and decision-making.

Era four (1900-1930s) focused on the systems approach to quality management.