What is one function of the hyphen?

to separate items in a series or list
to indicate a long pause or breath before the sentence continues
to make a dramatic point with the structure of punctuation
to connect two words acting as a single unit to modify a noun

One function of the hyphen is to connect two words acting as a single unit to modify a noun.

Explanation:

The correct way to use a hyphen (-) is to separate the two words that make up a compound word.

Its function is to join these types of words:

It is very important not to confuse hyphens with dashes. Dashes are much longer (-), while hyphens are shorter (-).

Another feature is that spaces should not be used when writing hyphens.

the answer is: b: however, that doesn’t mean that the current drought isn’t real.

recent news about two years ago indicates that a polish forestry student by chance unearthed at a depth of about 40cm (16 inches), during digging in a damp polish forest he found a 13-page manuscript into a thermos flask.

greek jew marcel nadjari was a aischwitz slave who witnessed how the nazi's built big death chambers and crematoriums and told how he was forced to escort fellow jews to the gas chambers. he accounts on this manuscript how the nazi's disguised this chambers to look like showers. also, he describes this place as a process of extermination from the chambers to the trains arriving to take the bodies.