Thank you, to all that participated. The correct answer is “look it up”, the phrase "look it up" suggests that the person does not know the meaning of the word but can find it in the dictionary. This means they will search for the word's definition in a reference book or online resource to gain knowledge about its meaning.

Here’s the correction that I made. I don't like most bestsellers. First, the reason for this is that bestsellers tend to cater to the masses. Second, they are often written in simple language and concepts. Additionally, bestsellers are usually designed to provoke, and sometimes even to be radical. Not to mention, there are thousands of classic works that I can hardly get through in a lifetime. I added a few punctuation marks, and paraphrased some sentences.

Both are correct.

Topic: future tense Both a and b are correct, it depends on the tense been used.