18. Which tool of the biologist is more suitable for culturing bacteria in the laboratory?
A. Test tubes
C. Perti dishes
B. Microscopes
D. Beakers​

I think C. Petri dishes

Explanation:

"The most common growth media nutrient broths (liquid nutrient medium) or LB medium (Lysogeny Broth) are liquid. These are often mixed with agar and poured into Petri dishes to solidify. These agar plates provide a solid medium on which microbes may be cultured."-https://courses.lumenlearning.com/boundless-microbiology/chapter/culturing-bacteria/

I hope this helps!