Introduction:
The learning objective in an EVS (Environmental Studies) lesson plan is a statement that defines what students are expected to learn or achieve by the end of the lesson. In the context of teaching about living and non-living things, there are several possible learning objectives that can be set for students.

Explanation:
a) Students will be able to name all the non-living things:
- This learning objective focuses on the identification and recognition of non-living things in the environment. It requires students to develop the ability to identify and name various non-living objects or entities such as rocks, water, air, etc. This objective helps students to develop their observational and categorization skills.

b) Students will differentiate between artificial and natural things:
- This learning objective emphasizes the ability to distinguish between artificial (man-made) and natural things. It requires students to understand the characteristics and features of both types of objects and identify examples of each. By achieving this objective, students enhance their critical thinking skills and develop a deeper understanding of the environment around them.

c) Students could tell the characteristics of living and non-living things:
- This learning objective focuses on enabling students to identify and describe the characteristics of living and non-living things. Students learn about the fundamental characteristics of living organisms such as growth, reproduction, response to stimuli, etc. They also learn about the characteristics of non-living things such as lack of growth, reproduction, etc. This objective helps students to develop their analytical and observational skills.

d) All of the above:
- The correct answer is option 'D' because all three learning objectives mentioned above are important and complementary to each other. By achieving all of these objectives, students will have a comprehensive understanding of the topic of living and non-living things. They will be able to identify and name non-living objects, differentiate between artificial and natural things, and describe the characteristics of living and non-living things.

Conclusion:
When designing a lesson plan on living and non-living things in EVS, it is important to set clear and achievable learning objectives. By combining objectives such as naming non-living things, differentiating between artificial and natural things, and describing the characteristics of living and non-living things, students can develop a holistic understanding of the topic. This approach helps students to enhance their observational, analytical, and critical thinking skills, which are essential for their overall development.