Which of the following statements is true?
a. implicit data type conversion is performed when you mix values of different data types in an expression.
b. every data type can be implicitly converted to every other data type.
c. values are implicitly converted from the data type with higher precedence to the data type with lower precedence.
d. you can convert a data type implicitly by using either the cast or the convert function.

 a)Implicit data type conversion is performed when you mix values of different data types in an expression.

Explanation: Implicit datatype conversion is the conversion mechanism in which the operand persisting the lower data type is changed into the higher data type for an expression.This process takes place automatically  to maintain the compatibility of datatype in an expression.

Other options are false because every datatype is not changed to other until the higher data type is found.There is no priority order from high to low for conversion. Implicit conversion is done by compiler automatically. Thus, the true statement is option(a).  

the right answer is a