B. will take
Feedback We use the Future simple (will and shall) to express immediate intentions that are decided at the time of speaking (spontaneous offers, promises and decisions): I’ll help you with your heavy suitcase.; I am hungry, mom! – I’ll make some chicken soup for you, dear!We use ‘will’ when decisions or intentions are immediate and ‘be going to’ when we have already made a plan. In the test sentence ‘Wait a minute, I ______ (to take) a notepad.’ we see the speaker’s immediate decision that he or she wants to take a notepad at the time of speaking, it is not a plan.Thus, we choose ANSWER 2 (will take).