Problems(1)
A unit square block is attached to any place on the group of seven unit square blocks below such that it shares a side with at least one block.[asy]
defaultpen(linewidth(0.5));
size(80);
draw((-1.2,0)--(-0.2,0)--(-0.2,1)--(-1.2,1)--cycle);
draw((0.8,0.5)--(2.9,0.5),EndArrow);
draw((4,-1)--(5,-1)--(5,0)--(4,0)--cycle);
draw((4,0)--(5,0)--(5,1)--(4,1)--cycle);
draw((4,1)--(5,1)--(5,2)--(4,2)--cycle);
draw((5,-1)--(6,-1)--(6,0)--(5,0)--cycle);
draw((5,0)--(6,0)--(6,1)--(5,1)--cycle);
draw((6,0)--(7,0)--(7,1)--(6,1)--cycle);
draw((6,1)--(7,1)--(7,2)--(6,2)--cycle);
[/asy]What is the minimum possible perimeter of this new group of blocks?<spanclass=′latex−bold′>(A)</span>11<spanclass=′latex−bold′>(B)</span>12<spanclass=′latex−bold′>(C)</span>13<spanclass=′latex−bold′>(D)</span>14<spanclass=′latex−bold′>(E)</span>15 2021 Individual