Which of the following is a quantitative measure of text complexity?

Conventions of language refer to the agreed-upon rules and structures that govern communication, including grammar, punctuation, and style. While these conventions can influence the clarity and effectiveness of a text, they do not provide a quantifiable measure of complexity, as they cannot be easily numerically assessed.

Knowledge demands pertain to the background knowledge required to understand a text. This aspect is more qualitative in nature, as it varies based on the reader's prior experience and comprehension skills. While it affects the overall difficulty of a text, it is not a quantitative measure that can be universally applied.

Structure refers to how a text is organized, including elements such as paragraphs, chapters, and overall flow. While structural elements can impact readability, they are not quantifiable in the same way that sentence length is. Structure is often assessed qualitatively rather than through numerical measurement.