Your answer would be d, I did this on my calculator
Arithmetic
Recursive: f(n)=(n-1) + 3 f(1)= 5
Explicit: f(n)= 5+3(n-1)
1) 
and 
and 
bisect each other (given)
2) 
is a parallelogram (a quadrilateral with diagonals that bisect each other is a parallelogram)
3) is a rhombus (a parallelgoram with congruent diagonals is a rhombus)
4) 
(halves of congruent segments are congruent)
