Excerpt from Seaplanes
Roberto Barerra

2Flying boats have a fuselage, or body, that looks and acts like a ship’s hull. This hull enables them to float on water very easily. Two small floats underneath its wings keep the flying boat stable in rough water. These seaplanes are usually larger and more stable on water than floatplanes are. A floatplane is a seaplane that has two long floats, called pontoons, under the fuselage. This is the only part of the plane that touches the water. Unlike flying boats, floatplanes often come in a wide variety of sizes. An amphibious vehicle can be either a flying boat or a floatplane with wheels. This allows the aircraft to land on both land and water.
If amphi- means both and –bious means mode of life, which word means adapted for both land and water?
A) dubious
B) ambitious
C) amplified
D) amphibious

Word that means adapted for both land and water

D) amphibious

Explanation:

The reason of this etymology of how the word is construed is given in the passage itself.

The word root  amphi- means both and –bious means mode of life.

These two roots combine to form the word that is given here and it is pretty clear to see that these two roots combined will mean something along the lines of both modes of life.

The two modes of life being described here are life in see and life  on earth.

So, the meaning of the phrase comes with the word Amphibious.

the price of our current war is high; it costs money and it costs lives.

but it does not cost our pride. it does not cost the guilt that would arise from knowing that we did nothing to intervene while our neighboring nations fell to despotic leaders.

it does not cost the terror of knowing that our allies are unstable. it does not cost the fear that we, too, will be next to fall.

which sentence most accurately explains why the speaker's use of the parallel structure is effective in this passage?

a. it underscores that disagreement will not be tolerated and will be dealt with swiftly.

b. it makes the speaker seem like a decisive and capable leader.

c. it emphasizes reasons to fight and inspires listeners to aid the war effort.

d. it establishes the speaker's credibility by acknowledging the difficulties of war.