Here is the OESolution:
Step 1: Understanding Intended MeaningAdministrative laws confer wide discretionary powers on the administrative personnel, enabling them to take decisions from case to case.
• Subject: Administrative laws
• Verb: confer
• Object 1: wide discretionary powers
• Object 2 (on whom) : the administrative personnel
• Ing modifier “enabling”, after a comma – modifies the verb “confer” in the preceding clause
• “them” correctly refers to “personnel” which is actually a plural noun although it looks singular.
• So, all in all, the sentence has no error.
Intended meaning:
• Administrative laws confer or bestow wide discretionary powers on the administrative personnel,
• Such wide discretionary powers are conferred so as to enable the administrative personnel to take decisions from case to case.
Step 2: Eliminate choices with identified errors Checking for five aspects
1. Golden rules
2. Meaning
3. Lists
a. No error
4. Tenses
a. No error
5. Idioms
Eliminate
There are no errors in Choice A.
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A. enabling them to take decisions from case to case.
Option A Feedback:
Correct and Explained in Step 1B. for them to take decisions from case to case.
Option B Feedback:
Fitting in the original sentence:
Administrative laws confer wide discretionary powers on the administrative personnel, for them to take decisions from case to case.
• The construction “for them” is awkward and does not convey the intended relationship that the powers are conferred so that the personnel can take certain decisions.
• The “for them” is also redundant since we already know the powers are bestowed on the personnel.
Incorrect Choice.
C. taking decisions from case to case.
Option C Feedback:
Fitting in the original sentence:
Administrative laws confer wide discretionary powers on the administrative personnel, taking decisions from case to case.
• The sentence does not clarify who is going to take decisions. It seems the laws are going to take decisions.
• MeM pair does not agree logically
Incorrect Choice.
D. that enables them to take decisions from case to case.
Option D Feedback:
Fitting in the original sentence:
Administrative laws confer wide discretionary powers on the administrative personnel, that enables them to take decisions from case to case.
• “that” is referring to "powers" which is plural. However, the verb "enables" is singular.
• SV pair does not agree in number
Incorrect Choice.
E. that they can take decisions from case to case.
Option E Feedback:
Fitting in the original sentence:
Administrative laws confer wide discretionary powers on the administrative personnel, that they can take decisions from case to case.
• The “so” before “that” is missing. Thus this construction does not convey the intended relationship.
• Incorrect idiomatic expression.
Incorrect Choice.