Hi
Please find answers in attached file.
Hope it help! :)
Step 1. Simplify brackets

Step 2. Simplify
13
Done! :)
Your answer is A. 13 Hope this helps!
Answer:
The correct answer is option C. Epstein-Barr virus: virus visible inside red blood cells.
Explanation:
The Epstein-Barr virus is a virus or virions that cause several serious diseases such as Guillain-Barre syndrome and kind of cancers. These viruses can be detected by the making smear of blood in the electron microscope.
The electron microscope shows round capsids that have protein encased genetically material that is loosely enclosed in a membrane. These are transmitted through saliva generally.
Thus, the correct answer is C.