Edit the following for spacing and punctuation: When the applicant's ethnic origin was stated explicitly, ethnic origin did affect selection (see Table 1,) but when ethnic origin was not stated explicitly, it did not affect selection (see Table 2) (The interviewers represented a variety of ethnic origins).

The chosen response effectively corrects the original text by improving clarity and ensuring proper punctuation and spacing. The revision maintains the flow of the sentence while clearly distinguishing between two scenarios: when the applicant's ethnic origin is explicitly stated versus when it is not.

In the correct answer, the phrase "ethnic origin did affect selection (see Table 1)" is retained, which clearly indicates that this effect was observed. The use of "but when not stated explicitly, it did not affect selection (see Table 2)" correctly contrasts the two cases, making it easy for readers to follow the argument. Additionally, it appropriately places the citations within the sentence structure without misplaced commas, which enhances readability and maintains academic writing standards.

This clarity is essential in research writing, as it helps prevent misinterpretation of the findings. The accurate punctuation also communicates the relationships between the ideas more effectively. Overall, option C presents a well-structured and precisely punctuated statement that adheres to the conventions of APA format.