Imagine that "XPatriot" is a U.S.-based company that is expanding operations in South America. When determining which employees will be selected for expatriate assignments, the company assesses candidates on four factors: 1) Ability to speak fluent Spanish; 2) Ethnicity, with preference being given to Hispanic candidates; 3) personality traits demonstrating one's ability to adjust to new cultures; 4) prior job performance within the company. When considering issues of legality and test validity, which of these four factors should XPatriot eliminate from their selection process? a. Ability to speak fluent Spanish b. Ethnicity, with preference given to Hispanic candidates c. Personality traits demonstrating one's ability to adjust to new cultures d. Prior job performance in the company