Which of the following is the reason why we should learn a second language?

A、Becausebylearningasecondlanguage,andperhapsevenmore,wecanunderstandeachotherbetteranddealwitheachotherwithmoreempathyandconsideration.
B、Becausemostcountriestoday,becauseofincreasingurbanization,internationalcommerce,tourism,businesstravel,andmoderntechnologyhavebeguntoembracetheconceptofasocietythatismulticultural.Andevidently,aglobalizedmulticulturalsocietywouldnaturallybemultilingual.
C、Leaningasecondlanguagemakesyouhavetheabilitytocommunicatewiththeothers.
D、Becauselearningasecondlanguagenotonlychallengesyourmind,butalsoenrichesyoursoul,sotospeak.