For the given question, two columns are presented, each containing three phrases. Select the pairs that can be successfully joined to form grammatically correct and logically coherent sentences.

COLUMN I	COLUMN II
(a) The school board decided to implement new policies	(d) to improve student safety across the district
(b) Although the chef spent hours preparing the signature dish	(e) so they want to finish the project by tomorrow evening.
(c) In order to secure a mortgage for the new house	(f) she decided to pursue a degree in mechanical engineering.

Correct Answer: Only (a)-(d)

Let's analyze the given options by evaluating each pair from Column I and Column II to check for grammatical correctness and logical coherence:

1. Pair (a)-(d):
Column I (a): "The school board decided to implement new policies"
Column II (d): "to improve student safety across the district"
Combined Sentence: "The school board decided to implement new policies to improve student safety across the district."
Analysis: This forms a complete, grammatically correct, and logically sound sentence explaining the purpose of implementing the new policies. Therefore, pair (a)-(d) is correct.

2. Pair (b)-(f):
Column I (b): "Although the chef spent hours preparing the signature dish"
Column II (f): "she decided to pursue a degree in mechanical engineering."
Combined Sentence: "Although the chef spent hours preparing the signature dish, she decided to pursue a degree in mechanical engineering."
Analysis: This sentence lacks logical connection. Spending hours preparing a signature dish has no clear relationship to deciding to pursue a mechanical engineering degree. Thus, pair (b)-(f) is logically incoherent.

3. Pair (c)-(e):
Column I (c): "In order to secure a mortgage for the new house"
Column II (e): "so they want to finish the project by tomorrow evening."
Combined Sentence: "In order to secure a mortgage for the new house so they want to finish the project by tomorrow evening."
Analysis: Using "In order to..." followed by "...so they want to..." is grammatically redundant and incoherent. Additionally, securing a home mortgage doesn't logically connect to finishing a project by tomorrow evening. Thus, pair (c)-(e) is invalid.

Conclusion: Only the pair (a)-(d) forms a grammatically correct and meaningful sentence.