What indicates that a child has self-corrected while reading?

The indication that a child has self-corrected while reading is the placement of 'Capital SC' above the word. This notation signifies that the child recognized an error in their reading and made a conscious effort to correct it on their own. Self-correction is an important aspect of developing reading skills as it demonstrates awareness of understanding and fluency in reading. Notating the correction helps educators and observers identify the child's engagement with the text and their ability to self-monitor their reading proficiency.

The other options do offer forms of marking but do not explicitly indicate self-correction. A line under the word, a check mark next to it, or a circle around the word might represent different reader behaviors or suggestions for attention but do not convey the act of correcting an error independently. Thus, the presence of 'Capital SC' is specifically recognized in educational contexts as a clear sign of self-correction.