I believe it would be declarative because it is stating a fact.
Interrogative is a question and will allmost always end in a question marks.
Imperative is an order and will almost always end in a period.
Exclamatory shows excitement or concern ends most often with a exclamation mark.
Answer:
Most bacteria, including Salmonella and E. coli, reproduce by binary fission. During this type of asexual reproduction, the single DNA molecule replicates and both copies attach, at different points, to the cell membrane. As the cell begins to grow and elongate, the distance between the two DNA molecules increases.
Explanation:
B and C seem like they are just giving information about the question, instead of answering it. A seems like a legitimate answer
1. Instrument for writing or drawing.
2. Small yard or animal enclosure.