Which of the following interfaces represents a function that accepts a double-valued argument and produces a result of the specified type in Java 8?
a) DoublePredicate
b) DoubleSupplier
c) DoubleFunction
d) DoubleConsumer
Answer: c) DoubleFunction.
Explanation: The DoubleFunction interface represents a function that accepts a double-valued argument and produces a result of the specified type.
