If the underlined word is only 'barking', then the correct answer is B) present participle, because those are used to form present progressive tense, as is the case here.
A) would be 'barked'.
C) would be 'bark/barks'.
D) would be 'barked', the same as A.
Answer:B
Explanation:
Transition words are used to connect ideas or themes
I think that the masks him and his friends wear symbolize, B. Avoidance
I hope this helps!