Question

What is the best transition to add at the beginning of the third sentence?

Volunteering is a good way to gain skills and work experience. In a recent study, seventy-three percent of employers said they’d hire someone who’d volunteered. Among employees who had volunteered, ninety-four percent said that it had benefited at work. Students looking to improve their resumes should consider volunteering.

Answer 1

Volunteering is a good way to gain skills and work experience. In a recent study, seventy-three percent of employers said they’d hire someone who’d volunteered. In addition, among employees who had volunteered, ninety-four percent said that it had benefited at work. Students looking to improve their resumes should consider volunteering. 

"In addition" seems like the best and most smooth-flowing in this case.

Answer 2

Volunteering is a good way to gain skills and work experience. In a recent study, seventy-three percent of employers said they’d hire someone who’d volunteered. Also among employees who had volunteered, ninety-four percent said that it had benefited at work. Students looking to improve their resumes should consider volunteering.