TechGenix, a leading software development company, has been struggling with prolonged periods of silence from candidates after initial contact. This issue led to extended hiring cycles and often resulted in losing potential talent to competitors. To combat this, TechGenix started crafting more engaging, personalized outreach messages and streamlined the information provided about roles and expectations. Which metric should TechGenix track to measure to enable them to determine whether their messaging strategy is working? a. message to hire conversion, b. sourcing channel effectiveness, c. open rates, d. time to respond