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 5?
Show answer & explanation
Correct answer: B
Explanation
The passage discusses the challenges of qubit coherence and high error rates in quantum computing. To "overcome these hurdles," researchers use specific methods. Since surface codes and topological qubits are well-known examples of quantum error correction (QEC), this choice fits the technical context perfectly.
Fallacious: Means false or based on a mistaken belief; logically incorrect.
Presumptive: Based on probability or presumption; not confirmed.
Monochromatic: Using only one colour (irrelevant to quantum computing hurdles).