Which of the following best represents a visual error in spelling?

B spelling 'cat' as 'kat' accurately exemplifies a visual error in spelling. This type of error typically involves a phonetic representation of a word, where a student substitutes letters that visually appear similar or represent the same sounds. In this instance, the sound of the word "cat" is retained, but the standard spelling is altered to a non-standard version that does not adhere to conventional English spelling rules.

In contrast, the other options do not represent visual errors in the same way. Mixing up ‘their’ and ‘there’ involves confusion between homophones rather than a visual similarity, while using ‘to’ instead of ‘two’ also represents a misunderstanding of word meaning rather than its visual form. Lastly, writing 'bake' as 'bake' demonstrates correct spelling, leaving no room for a visual error. Understanding these distinctions helps identify different types of spelling mistakes and aids in providing targeted instructional support.