Remember that exam questions in 'objective' testing: require you to select from a number of fixed answers. So a personal opinion cannot be assessed. Only one answer can be correct. The answer must be wholly correct in itself, The question could be asking for just a part of the whole story. Refer back to the question with this in mind when your struggling to decide.
For the particular question with regard to lights: the three navigation (position) lights add up to 360 degrees. The red and green radiating 110 degrees each and the white tail light therefore must be radiating 140 degrees. Worth drawing this out on some graph paper to fully understand. However the answer is partly in the question. For exam technique: whenever a "constant bearing" is in the question then you must be on a collision course. Look at the question again to see if the question is regarding a 'collision' course or whether it is asking who has the 'right of way'.
For me, with regard to a right of way, the aircraft concerned is within 20 degrees of of the nose and it should be considered a head on and therefore requires a turn to the right. The question, if it is quoted correctly, is unfair because the answer requires an opinion.
Last edited by Fl1ingfrog; 29th May 2021 at 15:39.