Concept:
The sentence requires two different words that sound alike but have different meanings.
Step 1: Understand the first blank.
The expression “cast votes” is a standard English usage.
\[
\text{cast votes} = \text{to vote}
\]
Therefore, the first blank should be:
\[
{\text{cast}}
\]
Step 2: Understand the second blank.
The sentence refers to social groups influencing voting behaviour.
The correct noun is:
\[
{\text{caste}}
\]
which means a hereditary social class.
Step 3: Form the complete sentence.
Even in the present times, some people cast their votes according to their caste.
Hence,
\[
{\text{Option (A)}}
\]