The correct answer is: scenic.
Scenic means beautiful or impressive in a natural way. It is often used to describe landscapes, such as mountains, forests, and beaches. The word scenic can also be used to describe paintings, photographs, or films that depict beautiful natural scenery.
The other options are not as accurate or appropriate in this context. Grand means impressive or imposing in size, scale, or effect. Ideal means perfect or nearly perfect. Great means large in size, extent, or amount. While these words can be used to describe beautiful scenery, they are not as specific or accurate as the word scenic.
In the context of the question, the word scenic is the best choice because it accurately describes the beauty of the land that captivates our mind and makes us happy. The land is described as being beautiful, and the word scenic is the best way to capture that beauty. The other options are not as accurate or appropriate in this context.