Electroconvulsive therapy, a longstanding method
for treating a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because it engenders considerable controversy due to its association with now outdated and unreliable forms of psychiatric treatment.
(A) for treating a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because it engenders
(B) for treating a variety of psychiatric disorders, involves the passing of 800 milliamperes of electricity through the brain and is now administered sparingly because it engenders
(C) for treating a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because of engendering
(D) to treat a variety of psychiatric disorders that involves the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because it engenders
(E) to treat a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, which is now administered sparingly, engenders
Solution: The given underlined segment contains a few errors. the use of 'involving the passing' is incorrect as here it refers to the psychiatric disorders which is not the intended meaning. The Electroconvulsive therapy involves the passing of current and not the disorders. Also use of comma before because is incorrect as it distorts the SV rule in the underlying clause.
(A) for treating a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because it engenders
As explained above, this is INCORRECT(B) for treating a variety of psychiatric disorders, involves the passing of 800 milliamperes of electricity through the brain and is now administered sparingly because it engenders
This option correctly uses the independent clause structure and conveys the intended meaning. CORRECT(C) for treating a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because of engendering
As explained in choice A, this choice has similar errors and hence it is INCORRECT(D) to treat a variety of psychiatric disorders that involves the passing of 800 milliamperes of electricity through the brain, is now administered sparingly, because it engenders
The use of that here refers to longstanding method as relative pronoun modifies the noun. This changes the intended meaning. Also use of comma before because is also wrong. INCORRECT(E) to treat a variety of psychiatric disorders involving the passing of 800 milliamperes of electricity through the brain, which is now administered sparingly, engenders
As explained in point A the sentence structure is wrong. Also the use of comma + which is incorrect here as which refers to the brain here which is not right. This is INCORRECTHence
Option B is the correct choice.