The characters are talking animals. Any other option would be logical and easy to explain, but talking animals don’t exist unless you consider a parrot. Nonetheless, the other options are logical and realistic while the last option is not at all realistic. Most children’s books are not realistic.
The answer would be It can be difficult to be different
Invade: Enter a place, situation, or sphere of activity) in large numbers, especially with intrusive effects... Synonyms for invade: occupy & takeover
Explore: travel through and unfamiliar area in order to learn about it.... Synonyms for explore: Tour & search
Answer: future
Explanation: It is telling about what will happen in the future.
Answer: While prancing through the meadow, the lamb was startled by the meteor
Explanation: They are both right but the 2nd sentence makes more sense to wright.