In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
As a result of Covid-19, the quick (1) ______ to digital training has exposed the hazards of student disengagement and the resulting consequences of lower student performance across (2) ______ courses. The latest (3) ______ has altered the education of millions of people around the world. New approaches and improvements in the school system are urgently required. Considering the increasing digital divide, the strategy may exacerbate existing inequality disparities. More than 500 million students, at various levels, around the world were forced to (4) _______ their studies. These changes have caused and will continue to cause some inconvenience, but they will also foster innovation and future reforms inside this education system. During a global Covid-19 pandemic, the 'pile-on effect' of the coronavirus can have long-term consequences for schooling, notably for the most vulnerable. Children, (5) ________ basic, core learning (reading, math, languages, etc.) was weak to begin with, face a significant risk of regression. During Covid-19, millions of children whose right to education has already been violated, particularly girls, are exposed to greater health and well-being hazards (both psychosocial and physical).
Select the most appropriate option to fill in blank number 5.