Okay, in that case the paragraph is just right-aligned. That suggests that
probably the Normal style has become right-aligned.
1. Click the dialog launcher arrow in the bottom right of the Styles group
on the Home tab of the Ribbon to open the Styles pane.
2. In the Styles list, click the arrow beside Normal and choose Modify.
3. In the Modify Style dialog, click Format and choose Paragraph.
4. In the Paragraph dialog, change the alignment to Left, and click OK.
5. In the Modify Style dialog, choose the radio button for "New documents
based on this template," then click OK.
Another way to approach this is through the Manage Styles dialog (accessed
via the third button from the left at the bottom of the Styles pane). On the
Set Defaults tab, you can set the alignment to Left and choose "New
documents based on this template," but if it is already set to Left, then
it's Normal you need to fix.