Are these two questions correct (answer is in bold font)?

1. Causal modeling techniques examine whether:

a. A pattern of correlations among variables fits the researcher's underlying theory of which variables are causing other variables.

b. A pattern of intercorrelations among variables fits the researcher's underlying theory of which variables are causing other variables.

c. Neither of the above is correct.

d. One variable causes another.

2. Legitimate paths in path analysis are those that do not violate which of the three following rules?

a. No path may pass through the same variable more than once.

b. No path may go backward on an arrow after going forward on another arrow

c. No path may include more than one double-headed curved arrow

d. All three are correct.