Answer:
I think it might be the 2nd one or the last one....
Explanation:
A specific group of bacteria called the lactic acid bacteria (Lactobacillus species) that produces lactic acid as they grow.
The answer would be B. The author was worried he/she might not enjoy camp.
He/She wasn't impatient because it said she "dreaded" it so that rules out A.
He/She wasn't welcoming the opportunity, because again, the word "dreaded" was used.
He/She wasn't excited because "dreaded" does not imply excitement.