Question

while researching a topic, a student has taken the following notes: - most, but not all, of the moon’s oxygen comes from the sun, via solar wind. - cosmochemist kentaro terada from osaka university wondered if some of the moon’s oxygen could be coming from earth. - in 2008, he analyzed data from the japanese satellite kaguya. - kaguya gathered data about gases and particles it encountered while orbiting the moon. - based on the kaguya data, terada confirmed his suspicion that earth is sending oxygen to the moon.
27 △ mark for review
the student wants to emphasize the aim of the research study. which choice most effectively uses relevant information from the notes to accomplish this goal?
a as it orbited the moon, the kaguya satellite collected data that was later analyzed by cosmochemist kentaro terada.
b before 2008, kentaro terada wondered if the moon was receiving some of its oxygen from earth.
c cosmochemist kentaro terada set out to determine whether some of the moon’s oxygen was coming from earth.
d kentaro terada’s study determined that earth is sending a small amount of oxygen to the moon.

Explanation:

To solve this, we analyze each option:

• Option A: The notes say Kaguya collected data and Terada analyzed it later, not as it orbited. Eliminate A.
• Option B: The notes state Terada wondered if some oxygen came from Earth in 2008 (when he analyzed Kaguya's data). This matches the research aim of emphasizing the study's aim.
• Option C: The notes say most Moon's oxygen is from the Sun, and Terada wondered about Earth's contribution, not set out to determine if "more" was from Earth. Eliminate C.
• Option D: The notes say Terada confirmed Earth sends oxygen, but the option's wording ("small amount") isn't emphasized in the notes as the main aim. The main aim was his initial wonder (option B) leading to the study.

Answer:

B. Before 2008, Kentaro Terada wondered if the Moon was receiving some of its oxygen from Earth.