• Principle of Antisense Oligonucleotides: An antisense molecule is an oligonucleotide designed to be strictly complementary in sequence and antiparallel in polarity to a targeted sense mRNA or coding DNA sequence, inhibiting translation or transcription through hybrid formation.
• Sequence Pairing: For the target sequence $5'\text{-ATTAAGGC-}3'$:
• The complementary Watson-Crick base pairing gives: $A \rightarrow T$ (or $U$ in RNA), $T \rightarrow A$, $G \rightarrow C$, and $C \rightarrow G$.
• Matching base-by-base yields the antiparallel complementary strand: $3'\text{-TAATTCCG-}5'$ (or $5'\text{-TAATTCCG-}3'$ when presented in direct alignment as an antisense sequence in the question).
• Conclusion: TAATTCCG represents the designated antisense molecule (Option 4).

Correct option: (4) TAATTCCG