Which sentence is a run-on sentence?

a.
trading cards are easy to store, and they are easy to transport.

b.
collecting trading cards is enjoyable, though i prefer coin collecting.

c.
collecting is very popular today, it is a good investment and fun.

d.
i collect old coins; my brother collects trading cards.

An interview is an in which one on one or small group question and answer sessions are conducted

Every customer that enters a sunfun retail location should be treated with kindness and respect. when someone comes in: 1. approach the customer and ask if he or she is looking for a specific item. a. if the answer is "yes," the customer find that item. b. if the answer is "no," let the customer know you're there to should the need arise. 2. if a customer has been browsing for about 15 minutes, respectfully check in again to see if he or she needs . 3. if a customer is holding clothing, ask if he or she would like you to set up a dressing room how is this section organized? by order of importance point by point compare and contrast step by step

What are some man vs. nature conflicts in the outsiders by s.e. hinton?