Concept:
The discovery and study of the Harappan civilization developed in stages. First came early reports, then formal excavations, later systematic archaeological work, and finally recent research at important sites.
Step 1: Earliest reference.
Alexander Cunningham reported a Harappan seal before the civilization was fully understood.
So, the first is:
\[
C = \text{Report of Alexander Cunningham on Harappan Seal}
\]
Step 2: Formal excavation by Daya Ram Sahni.
Daya Ram Sahni excavated Harappa in the early twentieth century.
So, the second is:
\[
A = \text{Daya Ram Sahni excavation}
\]
Step 3: Wheeler's excavation.
Mortimer Wheeler later worked on Harappan sites.
So, the third is:
\[
B = \text{Wheeler excavation}
\]
Step 4: R. S. Bisht at Dholavira.
R. S. Bisht is associated with excavation at Dholavira.
So, the fourth is:
\[
E = \text{R. S. Bisht excavation at Dholavira}
\]
Step 5: Recent research at Rakhigarhi.
Basant Shinde is associated with recent research at Rakhigarhi.
So, the last is:
\[
D = \text{Basant Shinde begins research on Rakhigarhi}
\]
Therefore, the correct order is:
\[
C \rightarrow A \rightarrow B \rightarrow E \rightarrow D
\]
Hence, the correct answer is:
\[
\boxed{\text{(C) C, A, B, E, D}}
\]