Answer: are now developing
Explanation:
Bangladesh has seen its growth rate increase in recent years such that the country went from being ranked at a least development status to a lower middle income country in 2015 then to a developing country in 2018.
The country is developing fast and in 2019 was recognised as the 7th fastest growing economy in the world. This rate of change is unprecedented and thus proves the statement in the question that;
Very few countries in the world are now developing as like Bangladesh.
