
If two similar waves are traveling in the same medium, then they have same wave velocity. so we can infer that

Now, as per the formula ~ we know that :

Now, we can write it as :

And it's also given that frequency of wave A is 3 times that of frequency of wave B.
So, let's add the relation to our equation ~



So, choice C is correct ~
I looked up the meanings of the two words and amenable means open and responsive to suggestion; easily persuaded or controlled. And docile ready to accept control or instruction; submissive. I really dont know what the answer is but i hope the defintions help
Answer:
"louder than the cannon fire"
Explanation:
Answer:
A or C
Explanation:
C because it is to moltiple readers
A because it could be to the one person