I think it's C. Responsibility
Please correct me if I'm wrong!! :) I'd be happy to fix it!!
-more textbooks to provide for every student
-school compulsory for up to 18 years of age
-more teachers so that classes are not crowded (and easier to teach with smaller classes)
-wider range of subjects available
-languages taught from a younger age e.g. English
2. Tiered
3. Window
4. Ground
5. Frightened
Answer:
I think it means calculations involved in determining how much fuel the EDS needs to safely make it down to the planet with its cargo.
:
