Rearrange the following words and phrases to form a meaningful sentence:
That he/a masterpiece/and called/he realized/this beauty/had created/Galatea

• ‘He realized that he had created a masterpiece and called this beauty Galatea’ is that the correct answer.
• ‘A masterpiece that he realized he had created and called this beauty Galatea’ lacks correct punctuation marks and doesn’t provides a proper intending to the sentence.
• So, this feature is wrong.
• Option c doesn’t have any sense and isn't logical. So, option C isn’t the proper option.
•  ‘Galatea a masterpiece he realized that he had created and called this beauty’ this sentence lacks a logical approach and makes no sense. So, option d is additionally incorrect.

Hence, option A is the correct answer.