Short-circuit logic should be used in boolean contexts, is there any difference using "&", "&&"

Question

I reviewed code and I found this operator & is there any difference with && if I want to change to &&

public bool isTemplate(string template)
{
    return (isValid() & lc.templates.Any(x => x.Id.Equals(template, StringComparison.Current)));
}

Answer 1

From documentation:

& operator always evaluates both operands.

&& operator evaluates the right-hand operand only if it's necessary.