Directions: In the following questions, some part of the sentence is underlined. Which of the options given below the sentence should replace the part underlined to make the sentence grammatically correct? If the sentence is correct as it is given then choose option E ‘No Correction required’ as the answer.
1
The subsidiary banks of the State bank of India were established by different special statues.
» Explain it
B
Special statute
an act of the legislature which has reference to a particular person, place, or interest; a private law; - in distinction from a general law or public law.

Option B hence is the most appropriate choice here.

Hence, the option B is correct.
 
» Explain it
C
Corrects error of preposition, definite article and phrasal verb. ‘Brood’ is followed by on/over. Days will be preceded by definite article ‘the’ because the days ‘gone by’ are talked of (or particularised).

Hence, option C is correct.

 
3
All banks whose shares are listed with stock exchanges are required to publish their unaudited quarterly results as per performance prescribed by the SEBI.
» Explain it
A
In banking, a company's pro forma balance or earnings are their expected balance or earnings. 

The term pro forma (Latin for "as a matter of form" or "for the sake of form") is most often used to describe a practice or document that is provided as a courtesy and/or satisfies minimum requirements, conforms to a norm or doctrine, tends to be performed perfunctorily and/or is considered a formality.

Option A hence is the most appropriate choice here.

Hence, the option A is correct.

 
4
 As good as a banker is concerned, the law relating to indemnities is of great importance.
» Explain it
C
Out of the given choices 'as far as' is the most appropriate option to choose.

As far as (idiom): to the degree that ...

Ex. As far as I know, he isn't coming to the party.

Hence, the option C is correct.

» Explain it
B
Option A is incorrect because a thing or idea is ‘focused on’ not ‘focused why’.
 
Option C is incorrect as well because a focus is not laid upon something. 
 
Option D has a tense error with the word ‘focused’. It should be ‘focuses’ to match with “hinges” which is in the present tense.
 
Clearly, option B is hence the correct answer.

Hence, the option B is correct.