阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Animals can be extremely protective of their young. But when hard times call, animal fathers can be really a danger to their own kids.
Daddy Lion
A combination of laziness, pride, cruelty and anger makes the lion one of the most fearsome and worst dads of the animal kingdom. When not walking proudly across the jungle, the father lion just lazes around under the sun, or waits for one of its lioness(母狮子) partners to bring back food. Once the lioness gets home the food, the lion eats up most of it, and leaves little or nothing at all for the kids. The father doesn't even train the kids for hunting and surviving, it is the lioness who teaches them how to fend for themselves.
The Polar Father
Cute, pure and soft. Protective of young ones and family? Sure. But what makes the polar bears one of the worst dads of the animal kingdom? They don't take care of the young ones, they won't take up the responsibility of feeding them, they won't take care of them like a father should. They just leave that to the mother bear.
The Assassin Bug(猎蝽)
Size matters, you say? This little bug would eat its own eggs to stay strong and fulfill its hunger needs. The male assassin bug is actually responsible for guarding the eggs. The female assassin bug lays eggs in large numbers. The male bug eats the weaker eggs.
Daddy Bass(岩鲈鱼)
Usually, water calms you down. Not so much for this underwater species. The male bass is known to eat up eggs from its own spawn. It guards the spawn(子，卵) laid by its female partner. However, when hungry and unable to hunt for food, the father won't think twice before eating up the eggs.
And do you think your father was strict and hard? After reading this article, I'm sure you think your dad is the best in the whole wide world for not eating you up!
与直线
的夹角为（ ）