Answer:
The dogs barked loudly
Explanation:
Since the word bark is in past tense which is barked we know that it happened in the past.
So first let's add each word in the sentence:
The dogs barked loud.
The dogs barked loudly.
Based off of these sentences the 2nd one sounds better because it is using a plural and understanding example of something that happened in the past.
If you understand that.
But in simpler terms the second answer better fits the sentence because it reads more clearly and thorough.
