Topic: Fill in the Blank,

Best Answer Explained in Below-:

The correct answer to complete the sentence "His fever is ___ to ignor." is actually not "A) too much high," as stated in the prompt. The phrase "too much high" is not grammatically correct in English. The proper expression should convey the idea that the fever's intensity exceeds what is manageable or acceptable.

The closest correct choice from the options presented would actually be "D) so high." The phrase "so high" accurately indicates that the fever is at a level that warrants concern or attention, making it something that cannot be ignored.

To break it down further:

- "too much high" incorrectly combines "too much" with "high," creating confusion about the severity of the fever.
- "much to high" suffers from incorrect word order and usage.
- "high to much" is also grammatically incorrect and doesn’t convey a clear meaning.

In English, we often use "so" to indicate a significant degree (e.g., "so hot," "so interesting") and suggest a result or consequence, which in this case implies that the fever is excessive enough to demand action. Therefore, the correct phrase should indeed be "His fever is so high to ignore," meaning it is dangerously high and must be addressed.