Use of the ________ comparison operator results in true when the field's value does not equal the specified value

What does pink highlight on text mean?

What will be an ideal response?

What is the meaning of ( ) in the following lambda? () -> System.out.println("Welcome to lambdas!")

a. the lambdas parameters are inferred b. the lambdas parameters are supplied by a method reference c. the lambda has an empty parameter list d. the given expression is not a valid lambda