All of the following are advantages of a defense-in-depth security design except which one?
a. defense in depth avoids single points of failure.
b. defense in depth keeps senior management out of the activities of the security department.
c. defense in depth divides and conquers, which separates projects into smaller pieces.
d. defense in depth filters user interactions.

the answers would be

the first one and the second one

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.  

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