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A- Usage of "was" verb for plural sublect "all of the historical and now existing alphabets" is incorrect
B- Subject- all of the historical and now existing alphabets deriving from that Semitic alphabet- does not have a verb
C- Correct
D- Same as B. "Derived" is used as a modifier
E- Verb- Was- is incorrect. The subject is plural

IMO C
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Alphabets arose among speakers of Semitic languages during the second millennium B.C and by idea diffusion and mostly by actual copying and modification of letterforms, all of the historical and now existing alphabets was derived from that Semitic alphabet.

A. mostly by actual copying and modification of letterforms, all of the historical and now existing alphabets was derived from that Semitic alphabet.

B. mostly by actual copying and modification of letterforms, all of the historical and now existing alphabets deriving from that Semitic alphabet

C. mostly by actual copying and modification of letterforms, all of the historical and now existing alphabets were derived from that Semitic alphabet.

D. mostly by actual copying and modification of letterforms, all of the historical and now existing alphabets derived from that Semitic alphabet.

E. most actually copying and modifying of letterforms , all historic and now existing alphabet was deriving from the Semitic alphabet


First, notice the "and" in the prompt - this signals some form of parallelism. In this case we need to repeat "by". Eliminate E.

Next, notice that "alphabets" is plural, and requires a plural verb. Answer: C
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I think two independent clause is connected by comma only in option "C". Anyone please explain how option "C" is correct.
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Option C -
- Alphabets arose ... during second Millennium AND
- by idea diffusion ..., all alphabets were derived ...

Although to be honest, the sentence could written better. Even the phrase (by idea diffussion and by copying and modification of letter forms) can be made more parallel.

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