The situation wherein you have to drop the final e in a base word before adding a suffix is when the suffix begins with a vowel. The answer is option D. Vowel suffixes include: -ance, -er, -ing, -able, -est, -ed, ation. For example, the word, MAKE. Make ends ine. But when connected to a vowel suffix, the letter e is dropped and becomes = MAKER OR MAKING.
Answer: bc you could not put what you need in there but have enough in there. if you don't put what you need it there then you wouldn't spend more than what you have in you account.