Final answer:
Women's college enrollment was lower than men's in the 1970s, but has surpassed men's since the 1980s. This shift has contributed to reducing, but not eliminating, the gender wage gap.
Step-by-step explanation:
The question about the historical trends in college enrollment by gender reflects changes in educational attainment and its subsequent impact on gender wage inequality. Based on the information provided, it is clear that the correct answer to the student's question is that women's college enrollment b. was lower than men's in the 1970s, but has been higher than men's since the 1980s. Since the late 1970s, men have been enrolling in college at a lower rate than women, with women graduating at a higher rate. This increase in the rate of women's college enrollment has opened more opportunities for them in skilled positions, thereby influencing the dynamics of the workforce and contributing to a reduction in the gender wage gap over time, although disparities still exist.
In summary, educational attainment plays a crucial role in understanding the nuances of gender wage inequality, as women have increasingly outpaced men in higher education achievement, altering the foundation of job qualifications and opportunities in the workforce.