NASA, space shuttles, and the International Space Station are

(a)all related to Cold War spy technology

(b) joint scientific study and space exploration efforts

(c) United States efforts to build anti missile defenses

(d) belief in extraterrestrial life

6 answers

And your answer is?
Um.. Not sure..

It's not d, probably not a..
Is it b? That sounds most logical..
Who are the parties involved in this joint study?

http://en.wikipedia.org/wiki/NASA

What does your text say?
Who are the parties involved in this joint study? : It would be NASA and the International Space Station, right...?
No. B is not correct. NASA is a U.S. government operation.

The best answer is A.

Please confirm that answer in your text.
thankssss