Final answer:
An individual who is not fluent in English would be least appropriate for transcribing a language sample from an English-speaking child.
Step-by-step explanation:
The individual who would be least appropriate for transcribing a language sample from an English-speaking child is Option 2: An individual who is not fluent in English.
Transcribing a language sample requires proficiency in both understanding and accurately documenting the spoken language. In this case, since the child is an English-speaker, it is essential to have someone who is fluent in English to transcribe the language sample.
Option 1: An SLP with limited experience using SALT, Option 3: A clerical assistant, and Option 4: An SLP assistant can all potentially transcribe the language sample, but Option 2 is the least appropriate since they are not fluent in English.