The correct option is
A Have the arrangements
The given sentence is a question. The first part of the sentence will follow the interrogative form. The verb 'been' is an auxiliary and the missing verb will be 'have', because 'have been' is a set verb form that expresses the present perfect tense.
Option A: 'Have the arrangements' is the most suitable option because of the verb 'have', that completes the verb form 'have... been'. Also, questions usually begin with a verb.
Hence option A is correct.
Options B and D: These parts 'the urgent steps' and 'a good salary was' begin a statement. They declare something.
'The urgent steps' is a subject and does not contain a main verb that would complement the helping verb 'been'.
'A good salary was' does not complete a question.
Hence these options are wrong.
Option C: 'When the invitations' also does not contain a main verb that would complete the auxiliary/helping verb 'been'. Hence C is wrong.