Final answer:
The misspelling 'Friten' represents a reduction of sounds in ending consonant blends by simplifying 'frighten's ending consonant blend 'ght' to a single 't'.
Step-by-step explanation:
The misspelling that illustrates a reduction of sounds in ending consonant blends is B) Friten. This error occurs when the consonant blend 'ght' in the word 'frighten' is reduced to 't' in the misspelling 'friten'. It showcases the reduction of the gh sound typically found at the end of English words when they are represented as a consonant blend.
Ending consonant blends involve the combination of two or more consonants that are pronounced consecutively at the end of a word without a vowel sound between them. In proper spelling, consonant blends should not omit any representing letters. The reduction of sounds in the 'frighten' example simplifies the blend by removing certain characters, hence the term 'reduction of sounds'.