(CETREDE 2026) - QUESTÃO

Which sentence uses the comparative and superlative forms of the adjective "reliable" correctly and idiomatically?

Ⓐ This method is more reliable than that one, but the other is the most reliable.

Ⓑ This method is more reliable than that one, but the other is the reliablest.

Ⓒ This method is most reliable than that one, but the other is the more reliable.

Ⓓ This method is reliable than that one, but the other is the most reliable.

Ⓔ This method is the more reliable than that one, but the other is reliable.

The correct answer is: A) This method is more reliable than that one, but the other is the most reliable.

✅ Why it’s correct:

• Comparative form: more reliable than — used to compare two things.

  • “This method is more reliable than that one.”

• Superlative form: the most reliable — used to show the highest degree among three or more things.

  • “The other is the most reliable.”

The sentence implies three methods: this one, that one, and the other one.

Why the others are incorrect:

• B) reliablest  — incorrect formation; “reliable” uses more/most, not -est.

• C) most reliable than  — superlative cannot be used with than.

• D) reliable than  — missing the comparative more.

• E) the more reliable than  — incorrect comparative structure.