video1.0<iframe src="https://www.loom.com/embed/a4359495144f4b39b13c8c1e460dfdb1" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/a4359495144f4b39b13c8c1e460dfdb1-00001.jpg108p: Which choice most effectively establishes the main topic of the paragraph? a: A) NO CHANGE; B) is one of the most renowned landmarks to feature this system.; C) took three years and over $175 million dollars to build.; D) is an iconic structure that many still refer to as the Sears Tower.