Read the passage carefully and answer the following questions:

Nobody can argue that the acquisition of knowledge is more fun and easier with computers. The mere activity of touching and exploring this device constitutes an enjoyable task for a child. This, accompanied by the relaxing attitude and software interactivity, usually contributes to a better grasping of knowledge. At a higher educational level, the availability of digital books, simulators and other academic materials provide the students with an ever accessible source of information, that otherwise not be at hand. However, besides the increasing complexity and behavior of intelligent software, which is usually embedded in the academic digital material, the need for human interaction in the learning process will always be present, at least in the foreseeable future. There is the necessity for a human being to be able to determine what the specifics needs of each individual are. A computer, no matter how sophisticated its software is, can hardly mimic the expertise of a teacher in how to explain and adapt complex concepts to different individuals.

Why can human interaction in the learning process never be obsolete?

Software can never explain complex concepts.

The correct answer is OPTION 4 - Software can never explain complex concepts.

The passage highlights that despite the advancements in computer software and digital materials, human interaction remains crucial because software cannot match the expertise of a teacher in explaining and adapting complex concepts to different individuals. This explains why human interaction in the learning process can never be obsolete.