The correct option is A The Al staff will go on an indefinite strike.
In newspaper headlines, the future tense is generally changed to a to-infinitive phrase, because headlines are designed to be short, in order
to attract attention. Hence the English rules used will be slightly
different than the normal spoken language.
In the given newspaper headline, the future tense has changed to an infinitive phrase "to go on an indefinite strike".
Option
A explains the headline by using
the future tense form of the verb 'go'. Hence A is the correct option.
Option
B: This has changed the meaning of the headline. Also, the meaning of this sentence is incoherent. Hence B is incorrect.
Option C is incorrect because B is not the correct option.
Option D is incorrect because the answer lies in A.