D. there is no comma even though there are two ideas and clauses
Answer:
The fact that there were no women in the interviews could lead us to believe that there´s a gender bias in his findings. Women, having different life experiences could probably have enriched Kohlberg´s theory.
Explanation:
Lawrence Kohlberg (1927-1987) produced his theory of the stages of moral development bases on interviews with masculine subjects exclusively.
His theory states that both men and women go through six different stages of human moral development during their lifespan.
Although it was early the heart already hung heavy in the air.