The answer is: An abundance of mineral resources has enabled the Swiss to develop
<span>They found that good pool players in a student union (who had made 71% of their shots while being unobtrusively observed) did .... More than 80% of both Whites and Blacks say race relations aregenerally good in their own neighborhoods, but fewer than 60% see relations as generally good in thecountry as a whole.</span><span>
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C. Perfect competition
This is an unlikely scenario in which buyers and sellers all get to be perfectly informed as to all of the present options for quality, price, etc.
The concept of guided participation highlights that 
development occurs in a social situation while extending sociocultural beyond language-based dialogue.
