Directions: Fill in the blanks with the best option to make it a correct sentence.

Since age old interactions, common security concerns and ________ of economic interests make India and Iran natural partners, the time is ripe to take the initiative to ________ the relationship.

Since India and Iran are being visualized as ‘natural partners’, it implies that their economic interests would harmonize or correspond with each other. So, options (1), (4) and (5) can be ruled out. ‘Divarication’ means divergence, ‘diversification’ implies spreading out in different directions and ‘ramification’ means to divide or spread out into branches. Though ‘fusion’ as well as ‘complementary’ fits the first blank, ‘emasculate’ means to weaken and hence does not fit in the second blank. Since India and Iran are being looked upon as natural partners, the time would be ripe to strengthen or bolster this relationship, and not weaken it. So, option (2) can be ruled out. Hence, (3) is the answer.