Answer:
The correct answer is A) pharmaceutical companies generally do not allocate a lot of money to research for new antibiotics because they are not very profitable.
Step-by-step explanation:
Bacterial resistance to antibiotics can occur due to various reasons
1 Bacterial resistance to antibiotics is generated due to overuse in agriculture and over prescribing by doctors in addition to other reasons.As a result the bacteria becomes adapted to those antibiotics.
2 Some bacteria choose to have a mutation that makes them resistant to effects of antibiotics.
3 In some bacteria random mutation occurs that make them resistant to the effect of antibiotics.