Matching Causes and Effects Young was unable to translate most of
the hieroglyphs.
Young discovered that hieroglyphs
could stand for sounds, like letters.
People thought the hieroglyphs were
sacred or from Chinese writing.
French soldiers found the Rosetta Stone
while tearing down a wall.
De Guignes figured out what the
cartouches were.
Scholars were able to locate the famous
names on the Rosetta Stone.
Scholars were able to translate the
famous names on the Rosetta Stone.
French and British scholars were able to
investigate the Rosetta Stone.
Young thought that hieroglyphs stood
for sounds only in names.
Scholars did not understand what they
were investigating.

in other words

to put it differently

for one thing

as an illustration

in this case

for this reason

to put it another way

that is to say

with attention to

by all means

important to realize

another key point

first thing to remember

most compelling evidence

must be remembered

point often overlooked

to point out

on the positive side

on the negative side

with this in mind

notably

including

like

to be sure

namely

chiefly

truly

indeed

certainly

surely

markedly

such as

especially

explicitly

specifically

expressly

surprisingly

frequently

significantly

particularly

in fact

in general

in particular

in detail

for example

for instance

to demonstrate

to emphasize

to repeat

to clarify

to explain

to enumerate

answer: b) bubbling its way

explanation: an adjective is a word or a group of words that modifies a noun (name, thing, place,

in this case, the first option "to heartily enjoy" isn't describing or modifying any noun, the third option "hiking along merrily" is describing an action but it doesn't modify any noun, the last option "beside us" is just a preposition that indicates position, so the correct answer is the second one: "bubbling its way" because it is modifying the noun "stream".

i would need to know the specific part of the passage your referring to ?