Gasoline and diesel fuel are more toxic to marine life but they also

a. disperse rapidly and evaporate quickly
b. disperse slwoly and don't evaporate
c. marine animals are used to them by now
d. don't settle down into the sediments
e. a and d

I think it's d?

You may be right but I would go with a and d.

To determine the correct answer, let's break down each option:

a. Disperse rapidly and evaporate quickly: This statement is true. Both gasoline and diesel fuel are hydrocarbons that are volatile, meaning they can easily turn into gas or vapor. When released into the water, they will disperse quickly and evaporate due to their low boiling points.

b. Disperse slowly and don't evaporate: This statement is false. As mentioned earlier, gasoline and diesel fuel do evaporate quickly.

c. Marine animals are used to them by now: This statement is not accurate. While some marine species may have evolved mechanisms to tolerate certain levels of pollution, gasoline and diesel fuel are still toxic to marine life and can have detrimental effects on their health.

d. Don't settle down into the sediments: This statement is true. Gasoline and diesel fuel are lighter than water, so they do not readily settle down into sediments. Instead, they tend to float on the water's surface or disperse into the surrounding water.

e. Option "a and d": This option includes both correct statements. Gasoline and diesel fuel disperse rapidly and evaporate quickly (option a), and they do not settle down into the sediments (option d). Therefore, option e is the correct answer.

In conclusion, the correct answer is e, both option a and d are true.