Final answer:
A barrier to women's advancement in leadership positions is women being less likely to promote themselves for leadership positions. This is evident in the concept of the 'glass ceiling,' which refers to the invisible barrier that prevents women from reaching the highest levels of business.
Step-by-step explanation:
A barrier to women's advancement in leadership positions is women are less likely to promote themselves for leadership positions. This is evident in the concept of the 'glass ceiling,' which refers to the invisible barrier that prevents women from reaching the highest levels of business. Research suggests that women may face gender biases, stereotypes, and limitations based on gender roles and motherhood, which hinder their progress in leadership roles. Additionally, women may lack mentors and opportunities for advancement, further impeding their journey towards leadership positions.