Final answer:
The caste system results in few opportunities for social mobility because individuals are born into their social status and have limited chances to alter it, despite modern changes that offer slight improvements.
Step-by-step explanation:
One primary result of caste systems is that social classes are rigid, particularly affecting social mobility. The impact of this rigidity on opportunities is that there are few opportunities for social mobility.
In a caste system, individuals are often stuck in the social status they are born into, determining their occupations, marriage partners, and housing, with virtually no options to improve their social position based on individual talents, interests, or potential. However, with modern developments, especially in urban areas, there has been some movement towards merit-based systems, creating slight fluctuations in historical rigidities.