Pulsars Are Generally Believed To Be Fast-Spinning GMAT Sentence Correction

Question: Pulsars are generally believed to be fast-spinning neutron stars to be located by the pulsating radio waves it emits.

(A) to be located by the pulsating radio waves it emits
(B) to be located by the pulsating radio waves they emit
(C) locatable by the pulsating radio waves which it emits
(D) emitting pulsating radio waves by which it can be located
(E) that can be located by the pulsating radio waves they emit

“Pulsars are generally believed to be fast-spinning” - is a GMATsentence correction question. Grammar mistakes are present in these questions, and we must select the appropriate response from the list of possibilities. The GMAT sentence correction topic has four options, and candidates must select the one that is appropriate. GMAT verbal includes the sentence correction section. It determines whether a candidate can identify the sentence's error. It also determines whether they can extract a context-specific idea or meaning.

Answer: (E)
Explanation: The pulsating radio waves that pulsars emit can be used to locate them, and this is generally accepted to be the case. Pulsars are fast-spinning neutron stars.

The adjustment that needs to be maintained for the given phrase can be justified with the use of certain guidelines below:

• Meaning
• Pronoun
• Collective noun

Let us analyze each option to find which of the options has a statement that fits perfectly in the underlined part of the question. The right statement will not have any grammar errors.

Option – A : Incorrect
The statement reads "to be located by the pulsating radio waves it emits." The most obvious mistake here is that it uses the singular 'it' to refer to the plural Pulsars. As a result, this option is rejected.

Option – B : Incorrect
The statement reads “to be located by the pulsating radio waves they emit”. This makes the false assumption that someday pulsating radio waves will be used to locate neutron stars. They can typically be located, which is the point of the sentence. As a result, this option is rejected.

Option – C : Incorrect
The statement reads “locatable by the pulsating radio waves which it emits”. The most obvious mistake is using the singular 'it' to refer to the plural Pulsars, which makes it simple to enter the question. As a result, this option is rejected.

Option – D : Incorrect
The statement reads “emitting pulsating radio waves by which it can be located”. The most obvious mistake using the singular 'it' to refer to the plural Pulsars is an easy way to get into the question. As a result, this option is the correct answer.

Option – E : Correct
The statement reads “that can be located by the pulsating radio waves they emit”. This makes sense and does not have any grammatical errors. The passage can correctly convey the meaning when this is put in the underlined part. As a result, this option is rejected.

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