These people may just want (31) ____________ stamps with animals or famous people on them.

Choose the word or phrase among A, B, C or D that best fits the blank space following passage

Some people collect stamps just for fun. These people may just want (31) ____________ stamps with animals or famous people on them. Or maybe they want to collect all the stamps issued by one particular country. Other people collect stamps that they think will be valuable down the road. Such collectors (32) __________ three questions to determine if a stamp is worth collecting and what its value might be.

First, how many of a particular stamp (33) ____________? Next, how popular is the stamp? Finally, what is the condition of the stamp? If a stamp has a low print run, a popular picture or design, and is (34) ____________ excellent condition, this stamp may be worth a lot of money. In 1980, a one-cent British Guinea stamp issued in 1856 (35) ____________ 935,000!

Question:

(thirty first) ____________

• A.
  collect
• B.
  to collect
• C.
  collecting
• D.
  collects