To solve this problem, we need to determine the mRNA sequence transcribed from the given coding strand of DNA.$\newline$The given DNA coding strand is: AGGTATCGCAT.$\newline$Let's analyze the transcription process:$\newline \bullet$The coding strand of DNA has the same sequence as the mRNA, except that thymine (T) is replaced by uracil (U) in RNA.$\newline \bullet$Therefore, the mRNA sequence will be:$\newline$AGGUAUCGCAU.$\newline$Now, let's compare this sequence with the given options:$\newline \bullet$Option 1: ACCUAUGCGAU$\newline \bullet$Option 2: UGGTUTCGCAT$\newline \bullet$Option 3: AGGUAUCGCAU$\newline \bullet$Option 4: UCCAUAGCGUA$\newline$The correct mRNA sequence, AGGUAUCGCAU, matches with Option 3.$\newline$Therefore, the correct option is Option 3.