Constructing an outdoor enclosure for cats can ease the transition from roaming freely outdoors to being confined, especially if the cat is used to coming and going as it pleases. These enclosures, sometimes called "catios," allow cats to be outside while keeping a barrier between them and birds, rodents, and small reptiles they prey on.


What is the effect of the word especially in the sentences?


A It emphasizes an important idea.


B introduces a new idea.