Last one is the best answer
Answer:
It takes a lot of responsibility to train a dog.
Explanation:
It even says in the 2nd paragraph "I thought that having a puppy would be fun, but it ends up being a big responsibility." This shows that having a puppy takes responsibility to train.
The reason Loki could be perceived as the "best" villain in the Marvel universe is that he always knows what to do. In any situation he has proven to have a back up plan. Loki is a very smart individual, and would most likely outsmart any others in war. He is also an extremely determined fellow. In Avengers infinity war, the opening scene, he tried multiple times to foil Thanos' goal. He may have failed every single time but it shows that he will try to get what he wants until that thing is gone.