Paleontologist Dr. Emily Roberts and her team analyzed the fossilized leg and hip bones of a 4.2-million-year-old early hominin known as "Ardi." They found that these bones were ______ the leg and hip bones of modern bipedal primates, such as humans and bonobos, suggesting that Ardi had adapted to walking upright. Which choice completes the text with the most logical and precise word or phrase?