[Solved] Differences in right- and left-handed fingerprint ridges are greater for heterosexual males than for gay males. Researchers have attributed this to A) erotic plasticity. B) prenatal hormones. C) refractory periods. D) basal metabolic rates. Vendors: Businesses or individuals that supply goods or services to another business. Timesheet: A timesheet is a document or tool used to track the amount of time an employee has worked on various tasks or projects. Stopwatch: A tool used to measure the amount of time elapsed from a particular time when activated to the time of deactivation. Employee Tracker: A system or software used by businesses to monitor performance, attendance, and various metrics of their employees.