correct option is C.
Explanation:
the best to test a hypothesis is not always the most obvious way
homozygous dominant:(BB) got 2 of them
heterozgous dimonant: (Bb) got 2 of them
homozygous Recessive: (none)
Answer:
The smallest possible beat frequency when B and C are sounded together is 3 Hz
Explanation:
Given;
the beat frequency of A and B = 2 Hz
the beat frequency of A and C = 5 Hz
Beat frequency is equal to the difference in frequency of the two notes that interfere to produce the beats.

Therefore, the smallest possible beat frequency when B and C are sounded together is 3 Hz