Option 1: "Yoga at home and yoga with family" emphasizes practicing yoga in the comfort of one`s home and engaging in yoga activities with family members. This option encourages individuals to create a peaceful and harmonious environment within their homes and strengthen family bonds through the practice of yoga.

Option 2: "Yoga for climate action" focuses on the role of yoga in raising awareness about climate change and promoting sustainable actions to protect the environment. This option highlights the connection between yoga, mindfulness, and the importance of taking care of the planet.

Option 3: The correct answer. "Yoga for well-being" is the theme of the International Day of Yoga 2021. This theme stresses the holistic benefits of yoga for physical, mental, and emotional well-being. It emphasizes the positive impact that regular yoga practice can have on an individual`s overall health and happiness.

Option 4: "Yoga for peace" emphasizes the role of yoga in promoting peace and harmony, both within oneself and in the world. This option highlights the practice of yoga as a means to cultivate inner peace and extend it to others, contributing to peacebuilding efforts globally.

In conclusion, the correct theme for the International Day of Yoga 2021 is "Yoga for well-being," focusing