In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
A city, predominantly made of red sandstone, Fatehpur Sikri (1)______ founded in the 16th century by the Mughal Emperor, Akbar. It is essentially a fortified city (2)______ had been the capital of Akbar (3)______ fifteen years. Now a UNESCO world heritage site (4)______ a famous tourist attraction, it is a fine (5)______ of Mughal architecture.
Select the most appropriate option to fill in blank number 4.