Lithium-ion batteries dominate the consumer electronics market because they pack a great deal of energy into a small volume. As vehicle manufacturers begin scaling up production for electric cars, however, they have run up against constraints that did not matter for phones or laptops: cost, raw material supply, and battery lifespan over thousands of charge cycles.
Which choice best describes the function of the second sentence in the text?
- A
It supports the consumer-electronics dominance described in the first sentence.
- Bcheck_circle
It introduces a new application context whose constraints differ from those of the first.
- C
It rejects the use of lithium-ion batteries entirely.
- D
It defines the term 'energy density'.
Explanation
The shift to vehicles introduces new constraints. B captures this transition to a different application context.