1.hiking
2. putting
3. seeking
4. traveled
5. mapped
6. offered
7. wandering
8. becoming
9. visiting
10. phoning
11. checking
That's all that I can see
Actually, yes, this is true. Let's look at some examples with the word "all" to see if it agrees with verbs in singular or in plural:
All is lost
All is well
All is arranged already.
All of it is nice
This shows us that "all" agrees with verbs in singular form: the correct answer is a) True.
the answer is A she shes shy and private