Sophisticated modeling software is international researchers
a. increase the pace of research in finding and producing vaccines.
b. analyze computer systems to gather potential legal evidence.
c. market new types of products to a wider audience.
d. create more intricate screenplays and movie scripts.

(A) increase the pace of research in finding and producing vaccines.

Explanation:

The production of a vaccine is an international research involving scientists and medical experts from different countries, and the use of sophisticated modeling software is helping these researchers increase the speed of research in creating vaccines. It usually takes up to 10 years of research before a vaccine is made available, but this sophisticated modeling software can help in the facilitation.