Will mark brainliest
according to the dictionary, -ment can refer to an action, a place, or a state resulting from an action. this definition is useful to know because -ment functions as a
a. suffix.
b. verb.
c. prefix.
d. root.

Suffix

A

A Suffix is formed when a letter such as “s” or group of letters such as -ion, -ious, etc. are added at the end of another word, it alters its meaning or function.

The suffix gives a different function to the main word.

For example using -ment and another word such as attach, the new word becomes attachment.  

The suffix has given the word a new meaning and function since attach is a verb and attachment is a noun.

Attachment means anything that can be joined to something else while attach describes joining something to something else.

a. inform

explanation:

"how to" tells us that it will explain how to, which means to inform