Final answer:
The probability that pictures of Sam, Jaime, LaQuita, and Alexandra will be on the same scrapbook page is 1/2. We consider there are two pages and choose one for these pictures with a probability of 1/2, without concern for the order on the page.
Step-by-step explanation:
To determine the probability that Sally's scrapbook will have pictures of Sam, Jaime, LaQuita, and Alexandra on the same page, we can first consider that with four pictures per page, there are two pages for the 8 pictures. The specific question is about arranging these 4 people out of the 8, making sure they are on the same page. We can choose the first page for them with the probability of 1/2. After selecting the page, it doesn't matter which of the four slots on the page each picture goes into; the important factor is that they're all together on one page. Since there are no further restrictions, the probability remains 1/2.
The correct answer is: D. 1/2.