Which of the following option leads to the portability and security of Java?Bytecode is executed by JVMDynamic binding between objectsUse of exception handlingThe applet makes the Java code secure and portable

The portability and security of Java are primarily due to the following factors:

1. Bytecode is executed by JVM: Java is considered highly portable because of its bytecode. This is a form of intermediate code, and not machine code, that is executed by the Java Virtual Machine (JVM). The JVM interprets this bytecode and runs it on the current machine. This means you can write your Java code on one machine, and the JVM on another machine can interpret and run your code. This makes Java platform-independent.

2. Use of exception handling: Exception handling in Java is a powerful mechanism that is used to handle runtime errors so that the normal flow of the application can be maintained. This contributes to the robustness and security of Java applications, as it allows developers to manage errors or exceptional situations gracefully.

3. The applet makes the Java code secure and portable: Applets are used to make Java code secure and portable for use on the web. They are designed to be transmitted over the internet and executed by a Java-compatible web browser. Applets are confined to Java's execution environment, which makes them less prone to malicious activities.

4. Dynamic binding between objects: Dynamic binding allows objects to interact with each other in flexible ways, enabling a single object to take on many different forms. This is a key aspect of Java's object-oriented programming model and contributes to its robustness and flexibility. However, it's less directly related to security and portability compared to the other points.