Which of the following tactics has al-Qaeda used effectively?

People sometimes are pushed to migrate from their countries by ______________________,

which arise when governments allow more land to be taken by large agro-export companies to create megafarms. Fill in the blank with correct word

In Parliament, select committees can hold hearings, take testimony, and question a. senior civil servants and ministers

b. the prime minister and 10 Downing Street members. c. the British monarch. d. members of Britain's nondepartmental public bodies. e. all of these.