External conflict: The swan was stuck in thorns. Evidence for this is: Nevertheless, he was able to release it from the thorns.
B.On the hike, Mr. Clark tripped over a tree root, fell to the ground, and broke his wrist.
Parallel structure is using the same grammatical structure for a list of items or ideas. In option B, all of the actions in the list are written in simple past tense. They do not include a helping verb or other form. The verbs are all the same structure: tripped, fell, broke.
Option A is not correct. To make it correct parallel structure, "being responsible" should be "responsibility". To correct the parallel structure for Option C, "babysitting" should be "to babysit". To fix option D, add "having" before fierce determination.
Answer: A
Explanation: In gothic literature everything is almost sad and gloomy. The atmosphere is intense and dark. There is also a lot of tension one way or another because a character might be fighting against the voices in his head, is a monster, or has dealings with the supernatural.