Tamara is an environmental engineer. Every year she updates her knowledge on the latest regulations, technology, and expands her engineering certifications. This year she is working to become board certified in radiation protection. Her company sent her to conferences, seminars, and training throughout the year and she is now studying for her certification exam. What type of training example best fits this scenario?

Off$-$the$-$job training

Professional development

On$-$the$-$job training