What attempts have been made to "normalize" spelling?

The answer highlights the idea that various initiatives and efforts have been undertaken to create a more consistent and uniform approach to spelling, yet they have not achieved widespread success.

Throughout history, numerous attempts have been made to address irregularities in English spelling. These efforts have often aimed at enhancing literacy and communication by proposing simplified or standardized spelling rules. However, the resistance from educators, linguists, and the general public has led to these interventions not gaining traction. For instance, many proposed spelling reforms have faced backlash because they challenge traditional norms or because they do not reflect the complexities and rich history embedded in the language.

In contrast, the other options suggest either successful normalization efforts, no attempts at all, or standardized testing as a way to normalize spelling. While standardized tests might assess spelling, they do not directly contribute to the actual normalization of spelling practices. The recognition of ongoing challenges in achieving a uniform spelling system aligns with the idea that these attempts have largely been unsuccessful.