Rachel carson can be credited for a. the modern environmental movement, slowing the extinction rate of hibernating mammals, and writing laws to protect the environment b. bringing attention to the unchecked use of pesticides, pesticides’ harmful effects on the environment, and writing laws to protect the environment c. bringing attention to pesticides’ harmful effects on the environment, the modern environmental movement, and slowing the extinction rate of hibernating mammals d. bringing attention to the unchecked use of pesticides, brining attention to pesticides’ harmful effects on the environment, and the modern environmental movement

The correct answer will be option-B.

Explanation:

Rachel Carson was the marine scientist, biologist and the conservationist who wrote many books related to the impact of humans on the environment.

Her writings included the sea around us, under the sea-wind and the edge of the sea but her sensational book "Silent Spring in 1962" spread the idea of the misuse of the pesticides.  

The Silent Spring warned the people about the misuse and threat of chemical pesticides like DDT and initiated the environmental movement. Her findings blamed the government and the public for this cause.

Thus, Option-B is the correct answer.

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answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.