The sequence of an mrna transcript is uggcacuccag. what will be the sequence of the template dna strand from which it was synthesized?

The correct answer is this one: "C. ACCGUGAGGUC."
The sequence of an mRNA transcript is UGGCACUCCAG. In mRNA uracil (U) replaces Thymine (T) and forms a base pair with adenine (A). On the other hand, Guanine (G) and Cytosine (C) form base pairs. 

In summary,
U <--> A 
G <--> C 

From the transcript,

UGGCACUCCAG <- mRNA 
ACCGUGAGGUC <- template, your answer!

Here are the choices
A. UGGCACUCCAG
B. ACCGTGAGGTC
C. ACCGUGAGGUC

Whatever you believe