Final answer:
Administering a written test is not considered a strategy for informal observation of oral language comprehension. Informal observations typically focus on interaction and conversation, employing methods like asking questions, using visual aids, and encouraging paraphrasing to assess oral comprehension skills in real time.
Step-by-step explanation:
The strategy that is not considered a method for informal observation of oral language comprehension is D) Administering a written test. Informal observations are typically dynamic and interactive processes that occur in natural settings, focusing on the spontaneous aspects of oral language comprehension.
Strategies like A) Asking questions, B) Using visual aids, and C) Encouraging paraphrasing are part of these informal assessments, as they help to gauge comprehension in a way that is integrated into conversation or interaction.
Administering a written test, on the other hand, is a formal method of assessment that does not reflect the immediate oral comprehension skills of an individual since it removes the interactive and immediate nature of spoken communication.
This test may evaluate different skills, such as reading comprehension or written expression, rather than capturing a person's ability to understand spoken language in real-time.