The question asks us to fill in the blanks with options that logically and contextually fit the statement about the three technologies: computers, the Internet, and the laser.
The correct answer is Unpredicted, Unappreciated, Unappreciated.
Option 3: Unpredicted, Unappreciated, Unappreciated
When I ask people to name three recently implemented technologies that most impact our world today, they usually propose the computers, the Internet and the laser. All three were unplanned, unpredicted, and unappreciated upon their discovery and remained unappreciated well after their initial use.
Let $T$ be a technology. The sentence demands adjectives that satisfy:
$T$ was unplanned $\Rightarrow$ $T$ was unpredicted (synchronic uncertainty),
and initial reception: $V_0(T) \approx 0$ (low perceived value) $\Rightarrow$ unappreciated,
with persistence: $V_{t\!>\!0}(T) \approx 0$ for a while $\Rightarrow$ remained unappreciated.
The passage emphasizes lack of foresight and initial underestimation of impact; hence Unpredicted, Unappreciated, Unappreciated is the most coherent and context-true choice.