
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 ~
Answer:
This statement means that it is self-limiting to subject our lives and decisions to patterns that we are already used to.
Explanation:
A hobgoblin is a spirit creature known in folklores as being mischievous. Consistency is depicted to be a negative trait as it is compared to something mischievous.
Ralph Waldo Emerson hereby implies that it is a mischievous or menacing attitude to get ourselves into a pattern because it is what we have always known to be true. This pattern limits us and prevents us from thinking outside the box.
Doubling, or C is the correct response.
Bias,create,daisy,diet, easel,fluid,lair,layer,manufacture,mere,nuclear,prior,poet,properly,quiet,raisin,riot,shower,triumph,typical,
hope it helps!
if i missed a word, pls let me know!