The correct answer for this question is this one: "<span>d.Statements I and II only."
The code fragment "</span><span>int result = obj.calculate(4, 3.14);" shows that the method calculate is a public one and it is located in a SomeClass that is also public. In this way, the method is easier to access through a certain object.</span>
(apparently I have to write 20 characters, but) mouse
I would suggest the following sources
1) job postings - those offer include the phrases that the employers themselves want to hear
2) keyword lists - they're made for looking for keywords!
3) professional site's skills sections. You could use LinkedIn or any other professional site.
4)Sometimes you can find software that can suggest keywords for you