Choice B but you have miswritten or misread 8/21 as 8/12
Answer:
improved energy production
Explanation:
Answer and Explanation:
Atoms are electrically neutral because they have equal numbers of protons and electrons. If an atom gains or loses one or more electrons, it becomes an ion.
Hope this helps!
Remember that D is just an unknown number "5 more than" means add 5 onto a number. 8 is "5 more than 3", 20 is 5 more than 15. "5 more than d is" d+5