Which of the following type casts will convert an Integer variable named amount to a Double type?

The correct answer is: A. (double) amount

A type cast is a way to explicitly convert a value from one type to another. In this case, we want to convert an Integer variable named amount to a Double type. The correct way to do this is to use the type cast operator (double), which is placed before the variable name. For example:

double amount = 10;
double convertedAmount = (double) amount;

The type cast operator will convert the value of the variable amount to a Double type. The value of the variable convertedAmount will be 10.0.

The other options are incorrect. Option B, (int to double) amount, is not a valid type cast. Option C, int to double(amount), is not a valid type cast. Option D, int (amount) to double, is not a valid type cast.