Answer:B chess masters have developed better memory skills than novices.
Explanation: DeGroot in 1965 carried out a research concerning the performance of Chess masters,experienced players and Novices in a chess game.
De Groot in 1965 discovered that Chess masters and experienced players have developed memory skills than Novices and are able to were able to remember the positions and the configuration of chess pieces on a chess board.
The entire production evinces authenticity and a real respect for the subject matter.
The answer is "task variety".
Task Variety is a term used to address fluctuation of conditions under which undertakings can seem despite the fact that their vital comparability: each deliberately institutionalized assignment can possibly happen under various conditions which add changeability to its execution, requiring adaptability from entertainers for settling on specially appointed choices and adjusting to various conditions.
Explanation:
proletral is the best definition