Question

select the erlenmeyer flask.

Explanation:

The Erlenmeyer flask is a conical - shaped laboratory glassware. The first image is a volumetric pipette, the second is a volumetric flask. The third image has the conical shape characteristic of an Erlenmeyer flask.

Answer:

The third image (the conical - shaped one with volume markings) is the Erlenmeyer flask.