The theme of the World Soil Day, 2017 is "Caring for the Planet starts from the Ground" which is option 2. This theme emphasizes the importance of soil in the wider context of environmental stewardship. Soil is the foundation upon which life on Earth depends, and by taking care of the soil, we are taking care of the planet as a whole.
Option 1 "Soils and pulses, a symbol for life" carries the message that healthy soils are crucial for growing pulses, which are an important source of nutrients and protein for human consumption. However, this option does not capture the broader theme of caring for the planet.
Option 3 "Soils, a solid ground for life" highlights the fact that soil is essential for supporting life, but it does not specifically address the theme of environmental care and stewardship.
Option 4 "Soils, foundation for family farming" recognizes the importance of soil in supporting family farming, but it does not encompass the broader theme of caring for the planet.
Therefore, the correct answer is option 2 "Caring for the Planet starts from the Ground".