To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Packages can be nested - This option is correct. In many programming languages, packages can be organized hierarchically, allowing for nested packages. This helps in organizing and structuring code into logical units.
Option B) You can pass parameters to packages - This option is incorrect. Packages are typically used to group related code and resources, but they are not designed to accept parameters directly. Parameters are usually passed to functions or methods within a package.
Option C) A package is loaded into memory each time it is invoked - This option is incorrect. Once a package is loaded into memory, it remains in memory until the program terminates or the package is explicitly unloaded. Packages are not loaded into memory each time they are invoked.
Option D) The contents of packages can be shared by many applications - This option is correct. Packages are designed to provide a way to organize and share code and resources. Many applications can use the same package, allowing them to access and utilize the contents of the package.
Option E) You can achieve information hiding by making package constructs private - This option is correct. Packages often provide mechanisms for encapsulating code and resources. By making certain constructs within a package private, you can control the visibility and accessibility of those constructs, achieving information hiding.
The correct answers are D and E. These options are correct because packages can be shared by many applications, and information hiding can be achieved by making package constructs private.