Which of the following statement is correct about Jhabua District?

a- It was, one of the five most backward districts of the country. 

b- It was characterised by a high concentration of tribal population.

Both statements are correct.

Jhabua district is located in the westernmost agro-climatic zone in Madhya Pradesh. It is, in fact, one of the five most backward districts of the country. It is characterised by a high concentration of tribal population (mostly Bhils).