Answer:
The core concept is the sentence. The start. It's the biggest thought on the subject. There was a mistake. The author will find the principal idea in a paragraph in various ways. The principal concept is normally a phrase, and usually is the first phrase.
Explanation: detailed enough i hope
It seems that you have missed the necessary options for us to choose from, but anyway, here is the answer. When Melissa is studying a Gram-stained slide of curd bacteria, she <span>sees many rod-shaped, violet-colored bacteria and the type of bacteria are they are LACTOBACILLI. Hope this answers your question.</span>