Step 1: Analyzing the socio-economic status of Adivasis:
Historically, Adivasi (tribal) communities in India have suffered severe economic exploitation, land alienation, and marginalization. Under colonial rule and continuing into post-independence national development, their land and resources (forests, minerals) were systematically taken over by the state and private developers ("outside settlers" or $dikus$), leading to widespread poverty, displacement, and malnutrition. Therefore, the statement that their economic conditions were better than non-Adivasis is factually incorrect.
Step 2: Checking the Truth of other Options:
• Option (B): Tribal populations are heavily concentrated in the North-Eastern states (like Mizoram, Nagaland, Meghalaya) where they form a majority of the population, as well as the central Indian belt. This statement is factually true.
• Option (C): Adivasis have a deep cultural, economic, and spiritual relationship with nature and have traditionally been known and characterized as the "people of the forest" ($Vanvasis$). This is true.
• Option (D): Shifting cultivation (jhum or slash-and-burn agriculture) was a widespread traditional agricultural practice among many tribal groups before it was restricted by colonial forest laws. This is true.
Step 3: Selecting the Correct Option:
Since option (A) is the only statement that is false regarding Adivasis, it is the correct answer.