Question

7 choose the answer that best completes the sentence below: the new calaveras dam has been engineered to prevent it from breaking during an earthquake. __________, it is being strengthened, in part, by having zones of compacted material, including a thicker core of impermeable clay. a on the other hand b however c for example d in conclusion

Explanation:

The second - part of the sentence gives an example of how the dam is being strengthened to prevent breaking during an earthquake. "For example" is used to introduce an illustration or example. "On the other hand" and "However" indicate contrast. "In conclusion" is used to sum up.

Answer:

C. For example