The noun 'perturbations' attempts to qualify the verb 'examines' which is incorrect, and thus, an adverb is needed at 'A'. Thus, the adverb 'currently' can replace 'perturbations'.
The adjective 'neural' at 'B' is incorrectly placed after the preposition as the word to be filled at 'B' should be a noun as prepositions are always followed by nouns and also because it is the cause of 'conditions', as per the context of the sentence. Thus, the noun 'perturbations' must be placed at 'B'.
The adverb 'currently' attempts to qualify the noun 'networks', and thus, an adjective is required at 'C'. Thus, adjective 'neural' can replace 'currently'.
The correct order is CAB. Hence, the correct answer is option (b).
Correct statement after corrections: The conditions that my laboratory currently examines are caused by perturbations in structured neural networks, such as schizophrenia and autism.