Question

which of the following is an example of parallelism?
\there is no strife, no prejudice, no national conflict in outer space as yet.\
\its conquest deserves the best of all mankind.\
\its hazards are hostile to us all.\

Explanation:

Parallelism uses repeated grammatical structures for emphasis and rhythm. The first option repeats the "no [noun]" structure three times, which fits this rhetorical device. The other two options lack this repeated parallel structure.

Answer:

"There is no strife, no prejudice, no national conflict in outer space as yet."