The relationship between the words botany : science is example to group. Option C is correct.
Botany is also refered to as plant science, plant biology or phytology. Botany is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. These gardens facilitated the academic study of plants.
Science is defined as the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.