Each question has four sentences. One or more sentences may be incorrect in grammar or meaning. Identify the sentence(s) that are incorrect.
A. The archaeological survey revealed an unique ancient temple complex hidden beneath dense vegetation in the southern forest reserve.
B. According to recent health studies, regular physical exercise is superior than sedentary habits in maintaining long-term cardiovascular fitness.
C. What a remarkable achievement the space agency accomplished by landing its scientific rover near the lunar south pole yesterday!
D. The chief editor requested the junior journalist to verify all sources before submitting the breaking news report on the urban water crisis. 

• Sentence A is INCORRECT: The word "unique" starts with a consonant sound, not a vowel sound. Therefore, using the article "an" is wrong. o Rule: Use "a" before words starting with a consonant sound (even if the first letter is a vowel letter like 'u'). o Correction: "...revealed a unique ancient temple..." • Sentence B is INCORRECT: Comparative adjectives ending in "-ior" (such as superior, inferior, senior, junior) take the preposition "to", not "than". o Rule: Adjectives ending in -ior take to instead of than. o Correction: "...exercise is superior to sedentary habits..." • Sentence C is CORRECT: Proper exclamatory sentence structure ending with an exclamation mark. • Sentence D is CORRECT: Natural indirect speech sentence using proper prepositional phrases.