Muhammad has grown up in a closed system of stratification. What does this MOST likely mean for Muhammad it means He can change his social ranking if he works very hard. This is further explained below.
Generally, stratification can be defined as The act of categorizing data, people, and objects into discrete categories or levels are known as stratification.
In conclusion, It is a method that is used in conjunction with other data analysis tools.therefore Muhammad changing his social ranking is very hard
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