Like adjunct and addition, both are defined as 'to add', so they are synonyms. In the choices, the best answer would be c. straits : hardship.
Abstentions is to abstinate, absence is not being present <span>Commodiousness is having a lot of space, size is a fixed proportion </span>Conjugation is verb changes, nouns are simply names
Straits is something that causes distress, hardship are challenged
Ways u could relate it would be since we’re highschoolers our generation IS the future and we have the power to change the world. starting conservation now would reap benefits in the future