Question

a preserved specimen of the marine protist g. conglobatus collected from the south atlantic has been identified as the species lectotype, a term —— that this specimen serves as the basis for all formal scientific descriptions of the species. which choice completes the text so that it conforms to the conventions of standard english? a is indicating b has indicated c indicated d indicating

Explanation:

In scientific writing, when a preserved specimen serves as the basis for formal scientific descriptions of a species and is designated as a lectotype, the correct phrase is "is indicated" to show its special status. "has indicated" implies action by the specimen which is incorrect, and "indicating" and "indicated" are grammatically and context - wise inappropriate here.

Answer:

A. is indicating