Which number is represented by the spelling 'four'?

The spelling 'four' directly corresponds to the numerical representation of the number 4. When you see the word 'four,' it is the written format of the numeral that is recognized as 4 in standard numbering systems. This connection between the word and its numerical value is foundational in understanding basic arithmetic and numeral literacy. Thus, recognizing 'four' as the correct answer is a fundamental aspect of number literacy and communication in mathematics.