What does 「かならず」 mean?

Answer and explanation

Correct answer: B. without fail

「かならず」 means without fail.
Answer: without fail.
Why not the others: a lot: that is the meaning of 「たくさん」. a little: that is the meaning of 「すこし」. probably: that is the meaning of 「たぶん」.

Practise more Everyday words.

Free questions with an explanation for every one, and full timed JLPT Practice (N5 and N4) - Japan mock tests.