Rugby is somewhat like American football in that both involve downs, tackles, and touchdowns, but it also combines elements from other sports, like soccer and hurling.
(A) Rugby is somewhat like American football in that both involve downs, tackles, and touchdowns, but it also combines elements from other sports, like soccer and hurling.
(B) Rugby is somewhat like American football in that all involve downs, tackles, and touchdowns but it also combines elements from other sports, like soccer and hurling.
(C) Rugby is somewhat like American football in that both involve downs, tackles, and touchdowns, but it also combines elements from other sports, such as soccer and hurling.
(D) Rugby is somewhat like American football in that all involve downs, tackles, and touchdowns, but it also combines elements from other sports, such as soccer and hurling.
(E) Rugby is somewhat like American football in that both involves downs, tackles, and touchdowns, but it also combines elements from other sports, such as soccer and hurling.
When giving examples we have to use such as, so A and B are wrong. all involve is idiomatically wrong expression. Both involve is correct subject verb agreement. So, and is C.