Final answer:
Individuals aged 30 to 42 in 2007 belonged to Generation X, which is regarded as the most educated generation ever, with high rates of high school graduation and higher education enrollment.
Step-by-step explanation:
Among the generations listed, those who were between the ages of 30 and 42 in 2007 would be part of Generation X (often abbreviated as Gen X), which includes individuals born roughly between 1965 and 1980. While the Baby Boomers and Millennials (also known as Gen Y) are mentioned for their significant impacts on society and cultural trends, Gen Xers are typically recognized for their education achievements and contributions to the workforce during their prime working years in the 1990s and early 2000s. Referring to education, individuals from Generation X have been labeled as the most educated generation ever due to higher rates of high school graduation and higher education enrollment compared to previous generations.