Question

question 3
which of these is a statement of opinion?
a. scientists would be wise to work on inventions more important than nanotechnology.
b. a japanese railway is trying to harness the power of walking.
c. the piezoelectric effect has been understood since the 19th century.
d. scientists from france are trying to capture energy from rain.

Explanation:

A statement of opinion reflects a personal belief or judgment. Option A makes a judgment about what scientists "should" do (work on more important inventions than nanotechnology), which is an opinion. Options B, C, and D are factual statements (about what a railway is doing, when a scientific effect was understood, and what scientists from France are attempting).

Answer:

A. Scientists would be wise to work on inventions more important than nanotechnology.