The correct option is A A-3, B-4, C-1, D-5, E-2
Option A - Spike matches with 3 - Adhatoda, as the flowers are borne on spikes.
Option B - Capitulum matches with 4 - Zinnia, as the bigger unstalked separate flowers arranged very close to each other and the smaller ones are at the center forming a canopy like flower.
Option C - Dichasial cyme matches with 1 - Bougainvillea, as the older flowers are present at the center that is at the end of the growing point and the younger flowers are on either sides of the old central flower.
Option D - Multiparous cyme matches with 5- Asclepias as more than one flower are produced at the same time or simultaneously in this particular variety.
Option E - Verticillaster matches with 2- Coleus, as this inflorescence is multiwhorled (has more than one whorl) and they are borne at different points at definite intervals on the same stem.