Please help me on this question

Which of the following is a complex sentence? a. after henry submitted his essay, he realized that he hadn't proofread the last page. b. identity theft is a growing problem, especially among seniors. c. we didn't have enough potatoes for dinner, so we served rice instead. d. jim tried to watch a video on a device connected to a crowded wireless network; as a result, the video stuttered and froze.

What ideal of imagist poetry is best reflected in this poem by ezra pound in which he compares a crowded metro station to a flowering tree branch? in a station of the metro the apparition of these faces in the crowd; petals on a wet, black bough. a. poetry should be about urban subjects and ideas. b. old poetry should be rewritten in a modern style. c. poets should be able to describe ordinary subjects in new ways. d. poets should write about new subjects with conventional techniques.

What syllables in "arrived" are stressed/unstressed?