A universal translator is the most directly linked to a concept first envisioned in science fiction that has since become a reality.
Correct answer C.
To determine which of these technological advancements was envisioned by a science fiction writer and later became a reality, let's explore each option:
1. Earbud Headphones:
- Science Fiction Origin: While classic science fiction may not have explicitly described earbud headphones, various forms of personal listening devices have been imagined in the genre.
- Reality: Earbud headphones became widely used in recent decades, but their direct prediction in sci-fi is less clear compared to other technologies.
2. Virtual Reality (VR):
- Science Fiction Origin: VR has been a common theme in science fiction. Notable examples include "Neuromancer" by William Gibson, where a form of VR called "cyberspace" is depicted, and "Snow Crash" by Neal Stephenson, which introduced the concept of a virtual world known as the Metaverse.
- Reality: VR has become a reality with the development of VR headsets and immersive virtual environments for gaming, training, and other applications.
3. Universal Translator:
- Science Fiction Origin: The concept of a universal translator is well-known in science fiction, notably in the "Star Trek" series, where a device is used to translate different alien languages in real time.
- Reality: Today, technology like smartphone apps and specialized devices can translate multiple languages in real-time, closely mirroring the concept of the universal translator.
4. Swimsuits:
- Science Fiction Origin; Swimsuits are not typically a technology associated with science fiction predictions. They are more of a fashion and practical garment development.
- Reality: Swimsuits have evolved over time due to changes in fashion, materials, and societal norms, but they are not the result of a sci-fi prediction.
Conclusion:
Among the given options, **a universal translator (c)** is the most directly linked to a concept first envisioned in science fiction that has since become a reality. While VR (b) also has strong roots in science fiction and is now a reality, the idea of a device translating languages across different species and cultures as depicted in science fiction (most famously in "Star Trek") and its realization in today's translation technologies makes it a striking example of a sci-fi concept that has been actualized.