I believe the answer is: <span>surprise, and the infant will stare at the spot the ball appeared to go through the wall.
In the field of psychology, this occurence is referred to as object permanence, whcih is the knowledge that an object would not dissapear even if we stop paying attention to it. At one year old, the concept of object permanence is still not fully developed yet.</span>
This passage should help you out if you're still stuck on the question.
C. They are usually a low-risk investment.
<span> Expulsion of the Hyksos, and invading group of foreigners, </span>
<span>2. Military campaigns to Kush, NUbia and Libya, </span>
<span>3. Elevation of Hatshepsut (a feamle) to the position of King of Egypt, </span>
<span>4. Expansion of the Karnak Temple, </span>
<span>5. More sophisticated priesthood at Karnak (Amen-Ra</span>