One conclusion a reader could make after reading the article is that creating a vaccine for a virus is a long, complicated process.
Which of the following statements accurately paraphrases evidence from the article to support the conclusion?
(A) To make enough vaccine for millions of people, it can take months or even years to grow enough disabled virus or to purify enough viral proteins.
(B) As these programs all show, getting a treatment for a new virus is not something that can be done overnight. It can take months or years.
(C) Despite secure and thorough animal testing, it might take a year for any of the vaccines in development to be effective against the COVID-19 virus.
(D) Even with suspending safety and efficacy testing, it might take more than six months for researchers to determine if any of the developed vaccines are effective against the COVID-19 virus.

the words "strangest" and "unusual" suggest (:

a complex sentence consists of an independent clause and one or more dependent clauses.  

to write complex sentences, we must use subordinating conjunctions.  

all the complex sentences begin with a subordinating conjunction and when it occurs, a comma must be place at the end of the dependent clause. on the contrary, if the sentence begins with an independent clause, then no comma is used.

after  

although  

as  

because  

before  

if  

since  

when  

for example,  

after she won the competition, she became very popular.  

although my father was hurt, he continued fighting for his rights.  

as all of you got a ten, you will be able to leave early today.  

before he went to the war, he asked his parents to bless him.  

if it is cold, i won’t go out.  

since you didn’t bring the homework, you will get low grades.  

when it is hot in the town, everyone goes to the beach.  

ok i am here, i brought some cookies and some movies. do you use blu-ray cuz thats all i brought. oh, and my friend wwill be here shortly, he is going to bring some pizza too.