Select the option that is related to the fourth term in the same way as the first term is related to the second term.

World Environment Day : 5 June :: ? : 20 August

Renewable Energy Day

World Environment Day : 5 June :: ? : 20 August

The logic followed here is :

World Environment Day : 5 June - World Environment Day is celebrated on June 5.

Similarly

Renewable Energy Day is celebrated on 20 August