This question appeared in some Mock GMAT
The time it takes for a star to change its brightness is directly related to the luminosity of it.
a. the luminosity of it
b. the luminosity of its brightness
c. the luminosity of a star
d. luminosity of it
e. its luminosity
The answer is E. Here is the explanation
The original version is grammatically correct, but the pronoun reference is vague. (To what does it refer?) (E) clarifies the pronoun reference by using the possessive its luminosity.
Isn't 'its' in option E also vague as it can refer to both "star" and "brightness"?
The time it takes for a star to change its brightness is directly related to the luminosity of it.
a. the luminosity of it
b. the luminosity of its brightness
c. the luminosity of a star
d. luminosity of it
e. its luminosity
The answer is E. Here is the explanation
The original version is grammatically correct, but the pronoun reference is vague. (To what does it refer?) (E) clarifies the pronoun reference by using the possessive its luminosity.
Isn't 'its' in option E also vague as it can refer to both "star" and "brightness"?
Last edited by popo33 on Sat Aug 30, 2008 10:13 am, edited 2 times in total.
