Question

to place things side by side for comparison.
substantiate
eloquent
justapose
pernicious

Explanation:

The definition "To place things side by side for comparison" matches the meaning of the word "Juxtapose" (note the typo in the option as "Justapose"). The other words have unrelated meanings: "Substantiate" means to prove something, "Eloquent" describes persuasive speaking/writing, and "Pernicious" means harmful.

Answer:

Justapose (correct spelling: Juxtapose)