Final answer:
The 55 and over age group is projected to increase the most in the workforce between 2000 and 2050.
Step-by-step explanation:
According to the information provided, the age group projected to increase in the workforce by the greatest percentage between 2000 and 2050 is the 55 and over age group. This can be inferred from the statement that the group representing ages 65-84 is growing significantly. Additionally, the statement that all Baby Boomers will be age 65 and older by 2030 indicates a substantial increase in the over-sixty-five population. Therefore, the 55 and over age group is projected to increase the most in the workforce.