To transform a sentence into a compound sentence, we need to connect two independent clauses using a conjunction. A compound sentence consists of two or more independent clauses joined by a conjunction such as 'and', 'but', 'or', etc.
Let's look at the given options:
(a) You must attend the classes so as to qualify for the examination.
(b) You must attend the classes but qualify for the examination.
In option (a), 'so as to' is a subordinating conjunction or a phrase used to express purpose, making the sentence a complex sentence rather than a compound one.
In option (b), the usage of 'but' seems incorrect here because 'but' is used to show contrast between two ideas which is not appropriate here.
Neither option clearly provides a compound sentence. However, a correction could be:
"You must attend the classes, or you will not qualify for the examination."
In this corrected version, the sentence clearly forms a compound sentence with two independent clauses:
"You must attend the classes" (independent clause).
"You will not qualify for the examination" (independent clause).
These clauses are connected by the coordinating conjunction 'or', indicating a choice or consequence, making it a proper compound sentence.
The correct transformation into a compound sentence requires two independent clauses connected by a conjunction. The options provided are not suitable; a better example is: "You must attend the classes, or you will not qualify for the examination." This version correctly uses two independent clauses connected by 'or'.
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