We could see water on either side as we hiked along the
constellation
suffix
isthmus
prism
coastline
Based on the sentence provided, the word that fits best in the blank is "isthmus." An isthmus refers to a narrow strip of land that connects two larger land masses and is surrounded by water on both sides.
The word that correctly completes the sentence is "isthmus."
To arrive at the answer, we can analyze the context of the sentence. The sentence describes a hiking experience where water is visible on both sides. We need to choose a word that fits into this context and describes a geographical feature that could account for water on both sides.
A "constellation" refers to a group of stars, so it is not appropriate in this context. Similarly, a "prism" is an object used to refract light, which does not fit with the hiking and water imagery.
The correct word is "isthmus." An isthmus is a narrow strip of land with water on both sides, connecting two larger landmasses. The presence of an isthmus would explain why water is visible on either side during the hike.