Question

A sentence is divided into three parts. Choose the incorrect part. If there is no error in the sentence , choose the option (4).
A ) conduct Space research
B ) launches satellites and
C ) ISRO designs, develops and
D ) No error

• A. conduct Space research
• B. launches satellites and
• C. ISRO designs, develops and
• D. No error

Hint:

When multiple verbs are linked in a series by a coordinating conjunction like and, they must be parallel in form: - Subject (Singular) + Verb1(-s), Verb2(-s), and Verb3(-s). - Example: He reads, writes, and speaks (not speak) English.

Answer 1

The Correct Option is A

Concept: This question requires identifying a parallel structure error and a subject-verb agreement issue in a compound predicate sequence. Let us reconstruct the sentence parts in their correct logical reading order: \[ \text{Part C} \rightarrow \text{Part B} \rightarrow \text{Part A} \] \[ \text{"ISRO designs, develops and"} + \text{"launches satellites and"} + \text{"conduct Space research"} \] Let us identify the subject and analyze the parallel verbs associated with it:
• Subject: ISRO (Indian Space Research Organisation) is a singular, proper noun.
• Verbs List:
• designs (Singular form with '-s') \(\Rightarrow\) Correct
• develops (Singular form with '-s') \(\Rightarrow\) Correct
• launches (Singular form with '-es') \(\Rightarrow\) Correct
• conduct (Plural base form without '-s') \(\Rightarrow\) Incorrect! According to the rules of parallel structure and subject-verb agreement, all verbs in a series sharing a single singular subject must share the exact same tense and number configuration. Because ISRO is singular, the final verb must be the singular form "conducts" instead of the plural base form "conduct". The fully corrected sentence reads: "ISRO designs, develops and launches satellites and conducts Space research." Therefore, the error resides squarely in Part A.