Which of the following programming principles is a key aspect of Java? a. Code obfuscation b. Platform dependence c. Object-oriented programming d. Global variables

The key aspect of Java from the options provided is c. Object-oriented programming.

Java is an object-oriented programming language, which means it revolves around the concept of "objects" which are essentially instances of classes. These objects can contain both data (in the form of fields, also known as attributes or properties) and code (in the form of procedures or methods).

The other options are not key aspects of Java:

a. Code obfuscation is not a principle of Java. It's a technique used to make code harder to understand or reverse engineer, but it's not specific to Java.

b. Platform dependence is the opposite of what Java stands for. One of the key principles of Java is "write once, run anywhere," meaning it's designed to be platform-independent.

d. Global variables are not a key aspect of Java. In fact, the use of global variables is generally discouraged in object-oriented programming because it can make code harder to understand and maintain.