Final answer:
The complementary strand of the given DNA sequence 5'-ATTCCGGATCGA-3' is 3'-TAAGGCCATAGCT-5'.
Step-by-step explanation:
The sequence of the complementary strand of DNA can be found by pairing each nucleotide with its complementary base. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). So, for the given DNA sequence 5'-ATTCCGGATCGA-3', the complementary strand would be 3'-TAAGGCCATAGCT-5' (option A).