Sam has an educational event scheduled at the public library on Tuesday, October 17 from 10-11am. The library is open daily from 9am-8pm. When is the earliest he can conduct a marketing, sales event at that library?

• A. Wednesday, October 18 at 7am
• B. Wednesday, October 18 at 12pm
• C. Tuesday, October 18 at 9am
• D. Wednesday, October 18 at 9am

Answer: (D)

Open hours matter: the library is open from 9 am to 8 pm every day, so any marketing event must start within those hours. Sam’s educational event on Tuesday runs 10–11 am, so in theory he could start a marketing event that same day after 11 am. But the options list times on the next day. The earliest time shown that fits the library’s hours on the next day is 9 am on Wednesday, October 18, since the library opens then. A 7 am slot isn’t possible because the library isn’t open yet, and 12 pm is later than 9 am. So the earliest valid option is Wednesday, October 18 at 9 am.