Answer:
c. Run-time Error
Explanation:
-A Syntax Error is a mistake in a program source code.
-A package is something that can be added to a program to have other features.
-Run-time error is a mistake that appears when the program is executing.
-JAVA API is a group of classes that are found in the Java development kit.
According to this, the error that is not detected while compiling a program and it is not noticed until the program asks the computer to do something inappropriate while executing is the run-time error.