Which answer shows the correct balanced equation showing the process of iron oxide (upper case f lower case e subscript 2 end subscript upper case o subscript 3 end subscript) explosively combining with aluminum (upper case a lower case l) to produce iron (upper case f lower case e) and aluminum oxide (upper case a lower case l subscript 2 end subscript upper case o subscript 3 end subscript)?

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.