The answer is A. Hope this helps! (:
“i set unrealistic goals for myself” he says
B. Him Singing. Such an odd question
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.