Review the families and classification of elements in the periodic table. Based on this information, you would expect elements to the left of the stair-step line in the periodic table to form ions and have valence electron(s).
A) positive; 1
B) negative; 4 - 7
C) positive; four or less
D) negative; three or less

A.

Explanation:

They lose 1 electrons in their outermost shell.

The proton to electron ratio become unbalanced where the proton overpowers.

Therefore, leaving the ion positively charged.

c. is the answer

by love gaming

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.