Answer:
(d). other persons of her race hold similar positions with other similar employers.
Explanation:
Under the Civil Rights Act of 1964 a prima facie case of discrimination is only concerned with the plaintiff (employee) case of discrimination against their employer alone.
Therefore, Sara's proof of evidence would EXCLUDE other similar employees dealings with persons of her race who hold similar positions
However it may be included as proof in court if after her rejection, "her employer" (Trek n' Travel Agency) accepted applicants with the same qualifications.