- is
- is
- requirements
- have
- reflect
- will have
- between
- been served
hope you are satisfied with my answer
Explanation:
HEY!!!
YOUR QUESTION IS CORRECT BUT PLEASE TELL THE CHAPTERS NAME.
The correct answer is 'their'
When you enumerate you need to put comas between all the items except the ones which are connected by "and" : as A is not correct as it does not have comas, and B is incorrect as it has comas where "and" is.
now, in a way both C and D are correct, but C is the usual accepted version, and D is an example of "Oxford coma" (where the coma is optional, to remain on the safe side, choose C).
A related process is co articulation, where one segment influences another to produce an allophonic variation, such as vowels acquiring the feature nasal<span> before </span>nasal<span> consonants when the velum opens prematurely or becoming labialised as in "boot". </span>