The answer is to u question is: C
This is true
People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength.
PHysical properties are properties that do not involve changes in the molecular level. In this case, malleability and magnetism are physical.
Chemical properties involve changes to the substance at the molecular level or change its identity. In this case, reacting with oxygen and nonflammability is a chemical property.
I think it would be sodium.
Because the atomic mass is protons + neutrons, so I did 6 + 5 = 11
Then I looked on the periodic table for an element with the atomic mass of 11 and it was Na... Sodium.
The acceleration of the bike is equal to 
opposing the movement (to the right).
Why?
Since after the rider slams the brakes, the bike came to a stop, we know that the acceleration is opposite to the velocity/movement.
We can use the following equation to calculate the acceleration:
So, substituting, we have: (let's consider negative to the left and positive to the right)
The negative sign means that the acceleration's direction is opposite to the movement.
Hence, we have that the acceleration is equal to opposing the movement (to the right).
Have a nice day!
