Read the following sentence. The Earth is divided into a Northern and Southern hemisphere. The underlined word contains the Greek affix hemi. The Greek affix hemi most nearly means ​ object.

This claim is incorrect. The Greek affix "hemi" does not mean "object." Instead, it means "half" or "part." In the given sentence, the underlined word "hemisphere" is formed by adding the Greek affix "hemi-" to the word "sphere." Therefore, the affix "hemi" in this context means "half" or "part."