Concept:This question tests your knowledge of popular Indian mythological fiction series and their authors. The key is to identify the correct trilogy that "The Oath of the Vayuputras" concludes.
Explanation:"The Oath of the Vayuputras" is the third and final book of Amish Tripathi's famous Shiva Trilogy.
The trilogy reimagines the Hindu god Shiva as a human hero who rises to become a deity.
The first book, "The Immortals of Meluha", was released in 2010.
The second book, "The Secret of the Nagas", came out in 2011.
The final book, "The Oath of the Vayuputras", was published in 2013.
In this book, Shiva seeks help from the Vayuputras, an ancient council, to fight evil.
The series is written in the "myth-history" genre, blending mythology with historical fiction.
It became a massive success and is one of the fastest-selling book series in Indian publishing.
Other series by Amish Tripathi include the Ram Chandra Series (starting with "Scion of Ikshvaku") and standalone works, but the Vayuputras book belongs exclusively to the Shiva Trilogy.
Answer:Option A: The Shiva Trilogy