The matching strand to the one in figure 12-7 , reading from the bottom up, would be_

Reading from the bottom the sequence of nitrogenous base is TCGA.

Nitrogenous bases are  molecules containing nitrogen and carbon which are present in DNA or RNA. Nitrogenous bases are of two types namely purines (adenine and guanine) and pyrimidines (cytosine, thymine or uracil). The bases may be attached to the sugar to form nucleosides. The attachment of phosphate to the nucleoside forms nucleotide which is the basic composition of nucleic acids.

it has one origin of replication, but it proceeds in two directions - d)

the answer to your question is slate