The Greek alphabet was the first alphabet to use both consonants and vowels. What alphabet system was the basis for the Greek alphabet? A.
English alphabet
B.
Roman alphabet
C.
Phoenician alphabet
D.
Latin alphabet

C.  Phoenician alphabet

Explanation:

The Greek alphabet  adapted the Phoenician writing that made their own language that develops a phonetic writing system. Each symbol adapted   represents a single consonant and consists of 22 characters with vowel sounds built into the symbols.

Hence, the Greek people learned from Phoenicians and adapted Phoenician alphabet system.

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