(a) Archaeological excavations
(b) Establishment of English Press in Colonial India
(c) Establishment of Churches in Princely States
(d) Construction of railways in Colonial India
Answer: a
Explanation:
A.H.Longhurst, Walter Elliot, Alexander Rea, James Burgess, Robert Sewell, and many others conducted systematic and careful excavation conducted at Bhattiprolu, Ghantasala, Amravati, etc, and exposed relic caskets which created much curiosity among Indian scholars about various aspects of these valuable reliquaries.
Hence, option a is correct.
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