In the 1930s, the japanese had expanded their reach into . the united states placed an embargo on japan. soon, japan faced a shortage of . the japanese wanted to make sure the us navy would not interfere with their plans to conquer southeast asia and other regions. for that reason, the japanese decided to attack . nextreset

1. First question
In the 1930s, the Japanese had expanded their reach into: Manchuria and southern China
The Japanese did their invasion in 1931 in order to obtain natural resources that lies within manchuria region that needed by Japan for their quest to conquer the Asian continent.

2. Second question
Japan faced a shortage of natural resources.
After the embargo, the Japan no longer able to enough supply for Oil that japan need to fuel their ships, trains for distribution and  air planes.

3. Third question
The japanese decided to attack pearl harbour.
During that time, the Japanese spent a lot of time and resources for their conquest in south east asia. 
But, the united states make some intervention to protect philippine from the Japanese, and they decided to bombed pearl harbour as a  response

The answer is the third one or c