Final answer:
In a 4/4 meter, the first and third beats are accented with the second and fourth beats being unaccented, creating a predictable rhythmic pattern.
Step-by-step explanation:
When metrical beats are grouped in fours, also known as common time or 4/4 meter in music, the stress pattern typically follows a particular rhythm where the first beat is accented and the third beat is less strongly accented while the second and fourth beats are unaccented. This pattern creates a sense of order and predictability in the rhythm, reflecting the natural tendency for emphasis in dance and music. Therefore, answer a) The first and third beats are accented, the second and fourth beats are unaccented is correct.
In meter of four, if metrical beats are grouped in fours, the first and third beats are accented, while the second and fourth beats are unaccented.