Re-arrange the parts in their correct sequence to form a meaningful sentence.

(A) students with tools for critical thinking
(B) cooperative learning is an
(C) that enhances creativity and provides
(D) eclectic and unique teaching method

The correct option is (B), (D), (C), (A).

To arrange the given parts into a grammatically correct and meaningful sentence, we can analyze the logical and grammatical connections between them step-by-step:
1. Finding the starting part: Part (B) "cooperative learning is an" introduces the subject ("cooperative learning") and the verb ("is") followed by the indefinite article "an". Since "an" must precede a word starting with a vowel sound, the next part must begin with a vowel.
2. Connecting (B) to the next part: Looking at the remaining options, Part (D) begins with the word "eclectic", which starts with a vowel sound. Therefore, Part (B) connects directly to Part (D), forming "cooperative learning is an eclectic and unique teaching method".
3. Linking to the relative clause: Part (D) ends with the noun phrase "teaching method". Part (C) starts with the relative pronoun "that", which refers back to the "teaching method" to describe its qualities. This gives us the sequence (B)-(D)-(C): "...teaching method that enhances creativity and provides".
4. Completing the sentence: Part (C) ends with the transitive verb "provides". The verb phrase "provides [someone] with [something]" is completed by Part (A) "students with tools for critical thinking". This completes the sequence as (B)-(D)-(C)-(A).

Complete Sentence:
"Cooperative learning is an eclectic and unique teaching method that enhances creativity and provides students with tools for critical thinking."