In the sentence below, identify which option BEST explains the grammatical reason why the comparative structure is considered incorrect and should be rewritten:

‘This book is more preferable than the other.’

Consider the direct speech:

“I can’t attend the meeting now because my supervisor is traveling,” said Laura.

When transforming the sentence into reported speech, it is necessary to consider the appropriate changes in verb tense and deictic expressions. About this, choose the correct alternative:

“Roman aqueducts were advanced hydraulic-engineering systems designed to transport water from distant springs to cities, bath complexes, and public fountains. Built with arches, elevated channels, and underground tunnels, they combined technical precision with topographic knowledge. Their durability and efficiency continue to influence modern water-supply projects.”.

The text about Roman aqueducts presents information organized objectively, explaining structural and functional characteristics of this hydraulic system. Considering principles of text typology and textual genre, choose the correct alternative: