Answer
See explanations below.
Work Step by Step
When we look at the values of a binomial distribution such as those in table B,
we can see that they are centered around the mean which is given by $\mu=np$.
For $p\approx 0.5$, the distribution will be close to symmetric.
With increasing $n$, we will have more data values for the distribution and when
$n$ is very large, the binomial distribution looks like a normal distribution
which means that we can use a normal distribution to approximate the binomial
distribution when $n$ is large and $p$ is no far away from 0.5
