Final answer:
The Masoretes were responsible for adding vowel points to the Hebrew consonants.
Step-by-step explanation:
The group responsible for adding the vowel points to the Hebrew consonants were the Masoretes. The Masoretes were a group of Jewish scholars who lived between the 6th and 10th centuries CE. They developed a system of vowel pointing called the Tiberian vocalization, which added diacritic marks to the Hebrew text to indicate the correct pronunciation of the vowels.