The Answer should be B. Credentials as going by it's definition and all.
B and d I know for a fact
Explanation:
number of people or things that are located, gathered, or classed together is called group
There are two neap tides per month because:
The moon and
sun are at a 90-degree angle to Earth twice a month.
Neap tides are also known as moderate tides. The lunar tide is partially cancelled when the moon and the
sun are at a 90-degree angle to Earth, or being at right angles. This event happens twice a month thus creating neap tides twice a month also.
Rick Riordan is a New York Times bestselling author due to his fantasy novels depicting gods of any ancient mythologies. The most famous among his work is the Percy Jackson series wherein characters were portrayed as the descendants of the Greek gods. Other mythologies that are his subjects include Egyptian, Roman, and Norse.