Oral language proficiency tests are designed to assess which of the following?

Oral language proficiency tests are specifically designed to evaluate a person's abilities in listening and speaking. These skills are crucial for effective communication in any language. By focusing on both listening and speaking, the tests can assess how well individuals can understand spoken language as well as how effectively they can express themselves verbally.

Listening skills are important because they gauge a person's ability to comprehend and respond to spoken language, which is vital in everyday conversations and academic settings. Speaking skills assess a person's capacity to articulate thoughts, convey ideas clearly, and use appropriate language features during oral communication. This dual focus allows educators to identify areas where learners may need additional support or practice to enhance their oral language skills.

The other options pertain to different aspects of language use. Written expression focuses on the ability to convey ideas in writing, reading comprehension concerns understanding written texts, and grammatical complexity relates to the intricacies of sentence structure, which may not be directly assessed through oral language tests. By concentrating on listening and speaking, oral language proficiency tests provide targeted insights into an individual's communicative competence.