Question

“since the end of june we have seen episodes of massive ______, or bloom, of microalgae, sometimes reaching as far as bathing beaches,” said jose juan aleman, director of public health for the canaries.
source: the guardian
○ efflorescence
○ interdependence
○ restitution
○ transposition

Explanation:

To solve this, we analyze the context: the sentence is about a "bloom of microalgae". We need a word with a meaning related to blooming.

• "efflorescence" means the process of flowering or a blooming (especially of algae, fungi, etc.), which matches "bloom".
• "interdependence" is about mutual dependence, not related to blooming.
• "restitution" is about restoring or compensating, irrelevant here.
• "transposition" is about moving or rearranging, not related to blooming.

Answer:

A. efflorescence