The answer to this answer is Would.
This is because the sentence speaks of a future projection; not a hypothetical one. We don’t use the present continuous when we predict something.
When we make an immediate decision, we use ’ll not will or shall or the simple.
There are errors while using the present perfect tense instead of the simple past tense. The present perfect is a present tense. It can’t be used with adverbs of past time.
It is wrong to use the future tense in the subordinate clause when the verb in the main clause is in the imperative mood.
When the verb in the main clause is in the future tense, the verb in the subordinate clause should be in the present and not in the future.
It is not option (A) because the gerund without the BE verb works as an adjective
It is not option (B) because the article, adverb and adjective are forming a correct phrase.
It is not option (D) because the passive form requires the verb to be in past participle.
You should have selected option (C) because the sentence speaks of a future projection; not a hypothetical one.