________ company’s vaccine candidate has become the fourth one in the United States to enter phase 3 trials ?

a) Eli Lilly and Company
b) Abbott Laboratories
c) Johnson & Johnson 
d) None of these

Johnson & Johnson’s COVID-19 vaccine entered Phase 3 trials in the United States on September 23, 2020. This is the fourth COVID vaccine candidate to enter the last stage of trials in the US, after Pfizer, Moderna and AstraZeneca.