这题的正确的答案是
3.My favorite animals are tigers and lions?主语是复数,谓语也是复数,所以正确.
其他的以对是因为1.My favorite animal are tigers?这个句子的主语是单数,后面的动词不能用复数are
2.My favorite animal is tigers?这个句子的意思是最喜欢的动物,但不止一只,所以animal要加S才对.
4.My favorite animas is tigers and lions?主语是复数,谓语动词一定要用复数are才对.