The correct option is D p - 2, q - 4, r - 1, s - 3
Yeast reproduces by process of budding. Small outgrowths called buds are produced which remain attached to the parent cell and eventually get separated and developed into new yeast organisms /cells.
Planaria reproduces by fragmentation. Its body breaks into distinct fragments. Each fragment grows into an adult planaria capable of producing offspring.
Penicillium reproduces conidiospores which are exogenous and non-motile structures.
Paramecium reproduces by method of binary fission. In binary fission a cell divides into two halves and each rapidly grows into an adult.