Answer:
Since the T-shirts convey a message they likely would be considered to be speech under the First Amendment.
Step-by-step explanation:
a. The T-shirts would not constitute speech under the First Amendment since there has been nothing said.
b. The T-shirts would not constitute speech under the First Amendment since they only have pictures on them.
c. The T-shirts would not constitute speech under the First Amendment since they are being worn in public.