1) which sentence includes the best domain specific words for an informative/explanatory article on how space exploration led to the development of new products for people?
a) many products we use every day come from technology developed during the moon landing projects.
b) scientists used mri, or magnetic resonance imaging, to select a suitable landing site on the lunar surface.
c) athletic shoes now use the same materials as moon boots.
d) cordless tools were developed for astronauts to use during space walks.
2) in an informative/explanatory article about vacation planning, which of these concepts would be used to explain something to the reader?
a) famous beaches
b) booking a hotel room
c) effective natural sunscreens
d) travel agent recommendations

1) Which sentence includes the best domain specific words for an informative/explanatory article on how space exploration led to the development of new products for people?

a) Many products we use every day come from technology developed during the moon landing projects.
Comment: this is  a good option, but there aren't many specific words

b) Scientists used MRI, or magnetic resonance imaging, to select a suitable landing site on the lunar surface.
THIS IS THE CORRECT ANSWER - it uses specific terms (MRI) and mentions how it was developed for space exploration. MRI is used in heath exploration today. 

c) Athletic shoes now use the same materials as moon boots.
= no use of very specific language
d) Cordless tools were developed for astronauts to use during space walks.
= there is no talk about the use of the innovation outside of the space exploration context

2) In an informative/explanatory article about vacation planning, which of these concepts would be used to explain something to the reader?

a) Famous beaches - this is not a bad, idea, but it lacks the part of "explaining" - it's rather "describing"

b) Booking a hotel room - this is the best option - a description how to do it would be a good explanation and it's related to vacation planning. 

c) Effective natural sunscreens - again, this is something to mention, but perhaps not to explain, also it's not specific to holidays, as you also need sun protection outside of holidays

d) Travel agent recommendations - this is again not a bad option, but it lacks the "explanation" aspect