OFFICIAL EXPLANATION
It is very sad that some people believe that if they do not have money or love, they has no reason to live.A. if they do not have money or love, they has
This answer choice is grammatically incorrect. The plural subject they does not agree with the singular verb has.B. without money or love, they have
This answer choice is the only grammatically correct one - it corrects the original Subject Verb Agreement mistake, by replacing the singular verb has with the plural verb have. The other answer choices (C, D and E all contain mistaken if/unless structures, and are thus eliminated.
What helps us identify this question as a Conditionals question as well as identify this mistake is the following Stop Sign: If / UnlessC. unless they will have money or love, they have
Although it corrects the original Subject Verb Agreement mistake, this answer choice is still grammatically incorrect. If and Unless cannot be followed by Future (will).
What helps us identify this question as a Conditionals question as well as identify this mistake is the following Stop Sign: If / UnlessD. if they have no money or love, they had
Although it corrects the original Subject Verb Agreement mistake, this answer choice is still grammatically incorrect. The condition part is in the Present (if... have), which indicates Conditional 1. The result part should thus be in the Future or Present. However, it is in Past Simple (had).
Another indication that the conditional is Conditional 1 is the context of the sentence. Unfortunately, this conditional describes a real, possible situation.
What helps us identify this question as a Conditionals question as well as identify the mistake is the following Stop Sign: If / UnlessE. if they will have no money or love, they have
Although it corrects the original Subject Verb Agreement mistake, this answer choice is still grammatically incorrect. If and Unless cannot be followed by Future (will).
What helps us identify this question as a Conditionals question as well as identify this mistake is the following Stop Sign: If / Unless