Civil magistrates in massachusetts set up a special court in 1692 to
try
a peter zenger for libel.
b try people accused of witchcraft.
c pass the half-way covenant.
d create the frame of government.

Option B.

Explanation:

Try people accused of witchcraft, is the right answer.

The Salem witch trials were a set of trials and pursuance of people arrested of witchcraft in colonial Massachusetts in the period between February 1692 to May 1693. The hearings started subsequent people had been arrested of witchcraft. One such example was the accused of an adolescent girl called Elizabeth Hubbard of age 17 years.

In these trials, a total of 200 people were arrested out of which 19 were found guilty and were killed by hanging. This witch hunt was the deadliest trial in the history of colonial North America.

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.