Which law did the manufacturing firm violate by rescinding Theodora's job offer?

The correct answer is Title VII of the 1964 Civil Rights Act, which prohibits employment discrimination based on race, color, religion, sex, or national origin. In the context of rescinding a job offer, if the decision was made based on any of these protected characteristics, it would constitute a violation of this law.

Title VII aims to ensure that all individuals have equal opportunities in the workplace and are not subject to discrimination during hiring processes. If Theodora's job offer was revoked due to one of these discriminatory reasons, then the manufacturing firm's action would directly conflict with the intentions of Title VII.

The other laws referenced—such as the Americans with Disabilities Act, the Age Discrimination in Employment Act, and the Equal Pay Act—address specific types of discrimination or equity issues but do not encompass the broader scope of discrimination based on the categories outlined in Title VII. Therefore, if the situation involved aspects of race, gender, or other characteristics protected under Title VII, this act would be the primary law violated by the firm’s action.