An integer is a whole number that can be positive, negative, or zero, but it does not include fractions or decimals.
From your options:
- \(-3\) is an integer.
- \(10.5\) is not an integer (it's a decimal).
- \(0.5443\) is not an integer (it's a decimal).
- \(\frac{4}{3}\) (four thirds) is also not an integer (it's a fraction).
So, the only integer among the given options is \(-3\).