Answer:
D: since GMO's are fairly new into the Humans technology spectrum, we haven't had much time to test on it and experiment.
Explanation: Hopefully this helps
The indefinite pronoun neither is always singular.
Neither is the negative counterpart of 'either' which is also singular. The basic principle of Subject-Verb Agreement says that the subject and verb must agree with each other, so you should use a singular verb because 'either' and 'neither' are considered singular; however, this principle is sometimes broken by a plural verb which can be used after 'either' and 'neither' informally.
Change "stole" to "stolen" so that the sentence would read
Marie has stolen my heart.
Now it is correct :)
