In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank:
Researchers in quantum computing face the twin difficulties of (1)_____ qubit coherence and (2)_____ error rates. While superconducting qubits have shown promise, maintaining coherence beyond microseconds remains (3)_____ due to environmental decoherence. Furthermore, scaling up the number of qubits requires (4)_____ control electronics that themselves introduce noise. To overcome these hurdles, teams are exploring (5)_____ techniques such as surface codes and topological qubits.
What should come in the place of 4?
Show answer & explanation
Correct answer: B
Explanation
The passage discusses the complexities of scaling up quantum computers. Managing a large number of qubits requires advanced, highly complex technology.
Sophisticated means highly developed or complex, which fits the requirement for advanced control electronics.
Austere: Means simple or plain; doesn't fit high-tech electronics.
Rudimentary: Means basic or primitive; scaling up requires the opposite.
Obsolete: Means out-of-date; researchers would not use outdated technology for cutting-edge problems.