Initially, BRO was functional under the Ministry of Road Transport and Highways. But after 2015, it works under the Ministry of Defence, Hence option2 is incorrect . The Organisation was formed on May 7, 1960. Hence the BRO Raising Day is celebrated on May 7, every year. Hence option 4 is correct . BRO constructed the Delaram-Zaranj Highway in Afghanistan in 2008. The Farkhor and Ayni airbases of Tajikistan were also restored and repaired by the BRO. Hence option 3 is correct . BRO is formed to provide connectivity to difficult and inaccessible regions in the border areas of the country. Hence option 1 is correct .