[Solved] In which of the following issues did Edward Bernays become involved in the 1930s and later describe as his "only professional regret"? A) doctor-assisted suicide B) pornography C) legalized gambling D) promotion of tobacco products E) abortion Taguchi Concepts: A set of principles and methods for designing high-quality systems that are robust against various types of variation, developed by Genichi Taguchi. Specification Limits: The defined upper and lower bounds within which a product's or process's performance must lie to meet customer or regulatory requirements. Target Value: Target Value refers to the specific goal set for a metric or outcome, which serves as a benchmark for performance measurement. Quality Loss Function: A mathematical formula that represents the cost of deviating from a product's target performance, emphasizing that this cost increases exponentially as the deviation grows.