What does "obsolete" mean when describing an item or concept?

The term "obsolete" refers to something that is no longer in use, has fallen out of fashion, or has been replaced by newer developments. When applied to an item or concept, it indicates that it is outdated or no longer relevant in the current context. This can happen for various reasons, such as technological advancements, changes in societal needs, or shifts in consumer preferences.

For example, certain technologies, like VHS tapes, became obsolete with the advent of DVDs and streaming services. This demonstrates how things can become outdated over time as better alternatives emerge. Understanding "obsolete" in this way shows that it is closely tied to the concept of relevance and modern usage.

While the other choices suggest either current relevance or acceptance, they do not capture the essence of being outdated, which is the core meaning of "obsolete."