Select the most appropriate option that can substitute the highlighted segment in the given sentence.
Police termed it as of riot on which two of their colleagues were killed and many spectators got injured.

Correct option is A

“as a riot in which two of their” is correct replacement.
As a riot in which two of their: This option correctly utilizes "in which" to introduce a relative clause that provides additional information about the riot. The preposition "in" combined with the relative pronoun "which" properly links the occurrence (the riot) to the events (deaths and injuries) described. The phrase maintains clarity and grammatical coherence.
Why Other Options Are Incorrect:
· (b) as a riot though which two of their: The word "though" is typically used to introduce a contradiction or exception, which does not fit this context. There's no contradiction being introduced here, making this choice incorrect.
· (c) as if riot about which two of their: The phrase "as if" is used for comparisons or hypothetical scenarios, which is inappropriate here since the statement is factual, not hypothetical. Additionally, the structure "about which" is less direct and less clear in this context.
· (d) as a riot for which two of their: The preposition "for" suggests causality or purpose, which isn't quite right in this context. The riot didn't happen for the purpose of the killings; instead, the killings happened during the riot.