25 POINT!!

Which of the following correctly explains how some bacterial infections can become difficult to treat with antibiotics?

The bacteria form flagella or cilia to move to new locations where they are protected.
The bacteria do not have the appropriate protein or lipid receptors on their cell walls.
The bacteria produce new types of enzymes that preserve and copy the genetic material.
The bacteria develop resistant endospores and pass their immunity on to others.

The bacteria develop resistant endospores and pass their immunity on to others.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.