How are bacteria different from viruses?
(a) Bacteria can cause diseases. (b) Bacteria posses cell structures such as cell walls, flagella and ribosomes. (c) Bacteria are very small in comparison to a virus. (d) Bacteria are only active when inside living cells.

(b) Bacteria posses cell structures such as cell walls, flagella and ribosomes.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.