Which of these sentences is correctly written and punctuated?

1.)keeping his active mind challenging roosevelt improved his stamp collection, and read books on american history, politics, and biography.

2.to keep his active mind challenging, roosevelt improved his stamp collection, reading books on american history politics and biography.

3)keeping his active mind challenged roosevelt improved his stamp collection reading books on american history, politics, and biography.

4)to keep his active mind challenged, roosevelt improved his stamp collection and read books on american history, politics, and biography.

The sentence that is correctly written and punctuated is 4, that is, "to keep his active mind challenged, Roosevelt improved his stamp collection and read books on American history, politics, and biography". This is the case because there is parallelism between the coordinated elements (the verbs), that is, they are both in the past simple tense ("improved" and "read"). What is more, it should be "challenged" instead of "challenging" and the -to infinitive clause of purpose is the right option to tell that to reach his goal (keeping his mind challenged) he improved his stamp collection and so on.

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such as answering phones, scheduling appointments, sending faxes, and filing documents.

explanation:

all of the following except for c.foreign government