The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Sky appears blue / as it absorbs / all colours and / reflects only blue.

Correct option is C

The segment "Sky appears blue" contains an error.

Explanation:

• The noun "Sky" should be preceded by the definite article "The" because we are referring to a specific entity that is known universally.
• In English, "The" is used before unique things in nature (e.g., The Sun, The Moon, The Earth, The Ocean).
• Therefore, the correct sentence should be:
• "The sky appears blue as it absorbs all colours and reflects only blue."

Grammatical Rule Used:

Definite Article Rule:

• "The" is used before unique things in nature (e.g., The Sun, The Sky, The Earth).

Example Sentence:

Incorrect: Sun rises in east.

Correct: The sun rises in the east.