Which of the following is the best example of a language objective in a lesson?

The best example of a language objective in a lesson is that students will be able to differentiate between day and night. This statement reflects a clear learning target focused on a specific language skill expected of the students, which relates directly to their language development.

Language objectives are aimed at enhancing students' communication skills in the target language, and differentiating between day and night requires students to use vocabulary and concepts that relate to understanding and articulating observations about the world. This objective directly encourages the use of language to express an understanding of a concept, rather than simply memorizing or recalling information.

Memorizing a vocabulary list lacks the practical application and communicative intent required for a language objective. Practicing reading comprehension strategies may contribute to overall literacy but does not specify the language skills being targeted. Learning to write complete sentences is a useful skill, but it does not specify a learning outcome connected to a particular communicative context or concept, limiting its effectiveness as a language objective. Hence, differentiating between day and night is the most illustrative of applying language in context, making it the most appropriate choice.