What did aragorn realizes merry/pippin left something to him track them?

Which of the following is a compound complex sentence

Now close reading is an essential and foundational skill needed to succeed in any language arts course. acquiring this skill will you form a strategy when writing about literature. you will be required to perform and develop this skill as you progress through this course and other courses in your school career. identify and discuss your areas of strength in language arts. what do you do well? what do you like doing in a course like this? why do those tasks work well for you? you can also identify a challenge you have that you’d like to work on throughout this course. use this discussion as an opportunity to give advice to your classmates based on your stronger skills and to ask for with skills you are still developing.

Someone is calling us.(passive voice)