A. Jerry loves tennis; he plays it everyday.
<span>Sinbad the Sailor plays a role in The Old Man of the sea as the man who makes the Old Man of the sea as a slave. Sinbad the Sailor lives somewhere in Baghdad. The old man of the sea became a slave when the shipwreck happened again.</span>
Hello!
Let's go through the given choices to find which word is a synonym for knocking.
A. Rapping means to strike something, specifically hard, loudly, to attract attention.
B. Ticking means to make sharp, short movements like a clock does.
C. Thundering means to make a loud, deep noise.
D. Popping means to make an explosive sound.
Therefore, the answer is A, rapping because knocking is striking a surface to get attention, which is similar to rapping.