Select the most appropriate option that can substitute the highlighted segment in the given sentence.
Many Cubans in circumstances similar to what I had become American citizens at the first opportunity.

Correct option is D

The correct option is (d) "similar to what I have."
The original sentence refers to a situation where "circumstances" should be compared directly to the speaker's current circumstances. The phrase "similar to what I have" correctly conveys that the circumstances being discussed are like those the speaker currently experiences. Option (d) maintains the proper comparison by using "what I have" to indicate the speaker's ongoing situation.
Why other options are incorrect:
· Option (a) "similar to mine": This option incorrectly generalizes the circumstances, implying that they are similar to something owned by the speaker, which isn't specific enough in this context.
· Option (b) "like those of mine": This is awkward and redundant because "those of mine" implies a possessive relationship that isn't necessary or clear in the sentence.
· Option (c) "like that of mine": This option is also incorrect because it mixes singular ("that") with possessive ("mine") in a confusing way, which does not appropriately match the plural noun "circumstances."